First off the engine comes set very rich for break in and will spit out more fuel then normally till you get to the point in break in where you start leaning it out. Being these engines are 2 cycles you will all ways have some oil coming out the pipe or the engine would not get enough lubrication.

The slipper clutch does not have anything to do with the problem of the wheels turning. The slipper clutch is just to protect the drive train while running. Sounds like to me you do not have your clutch put together properly or have the idle to high maybe radio trim is off. With out the engine running can you turn the clutch bell with out the engine turning?

Not to hurt any ones feelings but the SS kit is much better then the RTR. The SS kit has all the heavy-duty drive train, bigger engine and more. On the RTR it is only a matter of time before the ring and pinion gears strip in both the front and rear differentials. So any one with a RTR needs to get 2 sets of the heavy-duty gears, which are about $65 that come with the 18SS. All so on either I recommend a good hump pack for the receiver, which are much better then AA batteries.

Neither the RTR nor the SS kit comes whit a very good tuned pipe so this is a good thing to change when you can. All so I recommend getting all steering hubs (knuc