I have a 4910 and have converted to a 3.3. It has proline 40 trencher wheels steel cvd full aluminum skid and braces. Stock bell and integy 3 piece clutch leading edge engage Turning a 70 tooth spur and forward only conversion. I think it is tuned very nicely and I can't get it to wheelie without a small bump to pick up the front end. Once it's up it will stay up. What do I need to do to get this to pick up a bit more.