Had a chance to run the engine again on the repaired dyno. Same size chain with an idler to adjust chain better and used a mill/lathe tool cooling system spraying soul-able oil on the chain for cooling and lubrication. Seemed to work ok chain never even got hot.

Attached are some videos of the runs. The first run had a fouled plug which you can pick up on by the low foot pound reading. They are listed 1 thru 4. Number 3 was the last run with aviation gas with a 10 to 1 standard 2 cycle oil for pickling the engine. Don"t know when will run again.

The adjustments to the fuel map worked OK. No adjustments required with the steam wheel. Still seems rich thru 5k but will wait for on water conditions before further adjustments. Power is peaking a 7900/8000 and will require block exhaust work to gain more. Did run up to 8500 without consequences. Think 9500 is doable but will just try to get on the water. SOME WHERE.