I modified my 2 servos. Before I put the lids and screw them shut I tested them to see how they worked. They work great, but as soon as I screw the lid on, they rotate 360 degrees 4 - 5 times then do a quick 180 turn counter clockwise then back to continuous clockwise. They sometimes even begin to slow to a stop like the power source is dieing. But as soon as I take the lid off, they work fine again.
Any ideas? I have checked to make sure the gears are clean. They seem they should be fine.