Since this isn't your first post with weight concerns I have a couple questions...
Do you weigh your gliders regularly to monitor their weight?
If not I would suggest getting a digital scale that weighs in grams. Weigh them every couple of weeks or so, at the same time every time, before treats ( I usually do weigh ins around 1 or 2 pm ) and keep a journal of each weight. That will give you more information and you can see any major fluctuations and average weights over time. It's also good info to bring with to the vet if you should ever need to.
How old are the gliders? their weight will fluctuate until they reach about a year old then they
usually plateau off.
As I mentioned before, some gliders will gain a little weight in preparation of colder temps. Gliders store extra fat in their chest area, if your seeing "boobs" it is
not an indication of being over weight. The chest area is a healthy place for them to store fat in preparation of torpor. They use that fat as a reserve to sustain them if they slip into torpor.
Torpor is sort of like hibernation for a bear... it can be brought on by drastic temp drops in their environment. If a glider does not have adequate fat stored up before going into torpor it can become a dangerous situation in a hurry. Torpor is not all that common, but does still happen even in captivity if the conditions are right.
Now there is a way to tell if a glider is actually "over weight" if the gliders membrane feels thick and or lumpy.... the glider is technically over weight.
The membrane is NOT a healthy place to store extra fat. If your glider is over weight or you want to provide some good exorcise climbing is good and so is using your hands as a stepping ladder. One hand higher than the other and let the glider go from the top hand to the bottom hand. Space your hands far enough apart that the glider has to streeeeetch to reach your bottom hand.
The wheel...
Are you changing the sand paper inserts on the wheel frequently ???? The sand paper absorbs urine and needs replaced pretty frequently to not only keep in more sanitary but to also keep your gliders using the wheel.
I tried using the sand paper tracks on my raptor wheel and the minute the start absorbing urine my gliders stop using the wheel as much and finally stopped using it at all. Once I took the sand paper tracks off the wheel they started using it again...
Nail trimming, I can NOT stress this enough!!! Pleaseeeeee manually trim their nails. Trim tracks are only meant to help maintain the nails between clippings they are not meant to replace nail trimming with clippers!
Believe me I know how hard people think it is I struggled with it for months! but I kept trying until I figured out a few things that were making trimming nails harder.
Get yourself a LED forehead lamp, you can find them at most hardware stores. It's hands free, can direct the light where you want it and makes seeing the tiny nails much easier.
If you can't see the nails well go get yourself some cheap reading glasses!! I can not tell you how much easier nail trimmings are once I could see what I was doing. This ONE tool has helped me be more confident when I trim nails, when I'm more confident the gliders are more mellow! When I was nervous the gliders were more stressed and would not cooperate.
Get a nice big pouch with an open top put some treats in and pick up a foot, you can tuck the top of the pouch down around the gliders face if they are biters and just trim the nails. When your done with that foot open the pouch back up n pick up another foot .. I trimmed 6 gliders nails yesterday in less than 20 minutes. It only took that long because I pull one glider out at a time, it takes longer to get them in the trimming pouch than it does to actually trim their nails...
It's not going to be that quick at first, so take your time. If the glider or YOU starts stressing just stop. You don't have to get them done all at the same time. Give yourself and the glider time to relax and then try again.
You only need to trim two nails on the back feet, the toes that look fused together are their grooming nails and they do not need trimmed.
You only want to take the tip of the nail off if you cut to far you will hit the quick. If this happens and it bleeds just dab some cornstarch on it to stop the bleeding. The glider will be fine it usually freaks us out more than them.
Not trimming the nails regularly you are running a risk of them getting snagged and injuring themselves.