Stock bolts

I have taken my stock off several times to tweak this and that and noticed that the front stock bolt only catches about three and a half threads. For a steel bolt going into aluminum threads thats not much. Rear bolt holds about five and a half. Also noticed that the front bolt could go seven threads before bumping bottom. So I bought a longer bolt and ground it down to hold six and a half threads. I had the same problem on an early edgun and striped it out but it only had one stock bolt. Just sayin, might check yours just for peace of mind. Its a common metric bolt I found at NAPA. I also put a little grease on the threads so it doesnt wear the aluminum threads to fast.