[DuneBuggyBuilder]

This is a common problem and there are many previous discussions on it. Add the anti-stiction fluid as recommended (Lipsheet 0295) by Lippert. A quick Search uncovered these topics about the popping. There are more if you look.

http://www.montanaowners.com/forums/...ad.php?t=58952
http://www.montanaowners.com/forums/...ad.php?t=57001
http://www.montanaowners.com/forums/...ad.php?t=60806
http://www.montanaowners.com/forums/...ad.php?t=57734