I purchased an X2 CVT from Pocketbikes.com and it appears to be a rebuilt item, no mention of this on their site. I opened the cover, and it looked good, new belt, but I am wondering if I should open the gear box on the other side. Does anyone know about this? Would the box be lubed with grease, oil? Don't know what to look for, how to inspect the gears. Any advice on inspecting the gear box? The company's emails don't go through. It appears they can only be contacted by phone.