I am a noobie so cut me some slack and please help. I had a problem with my lx comp it was just revving and not going anywhere. So I just replaced the clutch and had the same problem. The guys at my hobbie shop said that my front diff wasnt working properly because when they would spin the front wheels only one wheel would spin instead of both. They said that the wheel that wasnt spinning was making the engine rev higher because all power was being transferred there. They told me to diassemble the diff and see what could be wrong. I didn't see anything broken or striped but I am noobie so I really wasnt sure what to look for. I reassembled everything and still had same problem so I disassembled it again and realized there was a small allen screw which I went ahead and tightened. Now the buggy runs but did i change a setting? Now both front when spun spin in the same direction when spun by hand. Is this normal or should I buy a new diff?