Dads like rc too

I would advise against the two speed swap.  Most of us have migrated away from the two speed.  Unless you change the gearing it never lets the engine get up to full rpm's in second.  Mine actually runs faster in first gear. I tightened the shifting clutch so it won't shift and my Tornado has much more power.  Second gear just bogs down.  In the beginning of this thread you can read about using HPI clutch bell pinion gears but I can't find 13 tooth pinions available anymore.  The lowest I've found are 15 tooth.    And I may have misunderstood your reply but it reads like - Great...I don't have to take it apart!  You do have to take it apart.  Remove the engine from the chassis and tighten the clutch bell screw on the end of the crankshaft.