This is my CYMA Aks74u mechbox, v3
Hey guys, take a look at this...

This is the gear i am using...

1-2-3 is pointed out to let you know i am using all 3 bushings rather than 2 with the modify gear set. I filed the holes a little to let each bushing fit nice and snuggle. All 6 of them are in the hole with a bushing. the spring is only a 100%-110%...
What could be the problem? Is it because i played with this setup in the winter?
rather than not modifying the bushing holes, i could have used only 4 (which the instructions explained for clone mechboxes).. is that the problem? maybe by using 6 bushings instead of 4, it shifted the gear set a little and is causing this problem?