Why is there a hole in the back of the lube cylinder? when I try to push the spring in and screw on the cap it leaks out a lot of lube, and also should it be so hard to compress that spring? I have the cap threaded all the way down and I have to put all my weight on it to even get it threade on about one turn, that's as far as it will go, I left it there I assume it is cross threads but with it being so hard to do I left it there. is there a way to compress the spring prior to installing it? if so how would you de-compress it ? hope someone can help me, this is a really cool machine and I am so tired of paan lubind and punching out boolits. Thank you, Travis