I've been working on an action figure torso that has a gearbox inside. I've tried to upload it twice. The first time, I can see that there wasn't enough room between my gear teeth. The second file got sent back by the 'bot' and I can't really see what is wrong with it. I've got .5mm between all the moving surfaces and two 4 mm escape holes for the extra powder to be removed. All my wall thicknesses seem to be at least 1mm. Sort of at a loss for next steps. Any thoughts?