If you rub the orings and outer part of the neck (of the hopper) with Dow 33 you can easily get a snug fit between a stock egg (no sanding) and stock feedneck (w/all orings), just spin the hopper clockwise as you insert it. It worked for me until I got my Q-lock
if that is still alittle tight, the best tool that I've found to remove orings (other than a oring removal tool
) is a dental pick....
hope this helps