Stripped screw? That don't sound good. Without applying too much force, take your rear (long) screw and run it in and see if it goes tight. If so, your short front screw is stripped- if not, the hole is stripped and that could mean a trip to a machinist/gunsmith for a helicoil, enlargement of hole and bolt.
Rednecks... Keeping the woods critter-free since March 2, 1836. (TX Independence Day)
I'm going to use the words "clip" and "Long Colt" every chance I get. It grinds my gears to see new members attacked when we all know dang good and well what's being refered to.