Just an update to my last post. I took the time to break in the HPI 3.0 engine and found that the LSN was set too lean from the factory. Opened it up about half a turn and it held idle and tuned nicely. Got the truck out on the opn pavement and ran it a bit adjusting the HSN until it performed well while still a bit rich. Adjusted the LSN by closing it about an 1/8 turn. The engine starts up and holds tune giving me great power throughout its band, Excellent top speed, blistering actually with the 15CB in there but not so impressive on the low end. I went to a 14CB and it made a nice difference. Still impressive top speed and much more low end. I have about a 1/2 gallon of O'Donnell 20% fuelthrough this engine now and it seems tobe dialed in very nicely and with the 14 CB. I ordered the 13CB and think its going to be just what I'm after. Interestingly, the 14 CB is not as deep as the stock 15CB that came with the truck and so I had to add two more washers between the screw and the CB to prevent it from sliding back and forth too much. No prob, worked well.

The clutch came with a two shoe setup with one large spring that wraps around both shoes. I ordered shoes and springs from the RS4 which is two teflon shoes and separate springs which i think is a better setup. Loving this truck.