Gearbox IssuesSo I have this older gun (Mp5 tokyo muri) and it had broken a while back and I'm thinking on modifying it if I can fix the gearbox. Now I'm new to airsoft so this is my first time fixing a gearbox and I honestly can't tell you what was wrong with it before I took it apart but now I need to put it back together correctly. Now I don't really need to fix it but if I could it would be pretty cool, now here's a picture of the cover for the oustide view of the gun.

Now here's the picture of the gearbox that I took apart, I know, the guns crap and you can tell just by the fact that its fricking transparent gears and such but still, for some reason I want to fix it.
Shell w/ motor and wires but other than that hollow view

Completed View

Gears

Spring

Trigger and other half of shell

Now there are some extra little pieces to it but I cant seem to figure out how to get it together. My hands are covered with the loving elephant lube they put on the inside for whatever reason, my pationts is dropping, and I'm just plain pissed at how challenging and crappy they made it to fix.