Wow!! finished breaking in my revo 3.3 last week and finally had time for some real bashing!! I used it the following day after breaking in and it wasn't running well, looked like the clutch was fu...ed and it just kept slipping and a friend of mine having the exact same problem with the same car. I took it home to get the clutch checked and it was fine..... and then came to read about adjusting the slipper clutch, Tightened it a quarter and wallaaaa... problem solved. Thing is when i fitted the engine back in place i did not pay much attention in adjusting Spur Gear/Clutch Bell Gear Mesh and after a while of awesome and i mean AWESOME bashing the clutch bell (metal) wore out the spur gear (plastic) and I'm wondering if i can buy the spur gear in a stronger material (metal)??