Guys please help!!

you could have a few items going on here. lay the sled on the clutch side down for 30 seconds not running then flip it back and check the coolant level. this makes the coolant bottle the high point in the system. if the level drops add and repete. if no level drops make sure the sled is in the shop over night and warm to make sure you don't have frozen coolant in the bulk head area. i have see guys buy antifreeze that was 50/50 already and then add 50% water to it not knowing it was 50/50. if each of these don't work you might have a bad water pump gear or broken pump blade.

If it has an air bubble trapped in there it can be a real pain in the a** to get out. Even with air bleeds built in. Keep working with it.

Bleeding exchangers

Roll over on clutch side as stated above, run throttle with track off the ground because it is completely on its side. Just idleing it is difficult to get the rear heat exchanger to heat up. Although running it spinning it 5min. on its side will warm it up.
Keep oil full and antifreeze full and repeat until level doesn't drop at all. Oil full, because it can get an air bubble in the line!
If it doesn't warm up, broken water pump! Hope it is not!