1) is it OK to soak bolt, etc in a solvent? how long? 2) PLEASE help me figure out a better way to clean the chamber/locking lug. i feel like i never really get this area clean. would any special tool really help? (hopefully there is a better way than using 50-75 q-tips....) 3) any tips to clean the receiver out easily would also help a brother out... 4) how often do you need to clean the gas tube? thanks! signed, hawkguy (who has owned an AR for quite awhile but still feels like his AR IQ is about 85).