You use a sleeve from Advanced Sleeve. You bore existing cylinder for interference fit using the web on crankcase rod slot for the step. Freeze sleeve in nitrogen, heat block to 350 in oven and sock it in. When it reaches room temp, mill top of sleeve flush with block and use end end mill and...
Spark looks weak to me....Spark intensity depends on coil voltage from battery. If spark starts out strong then starts to weaken the resistance wire or coil maybe failing. Need to monitor voltage at the + side of coil to see if it drops below 9volts...
I suspect that the aluminum plate the red arrow and line next to it should be at the yellow line right arrow is pointing to. This will force the inner wake between toons to converge, and be directed downward adding to water flow to prop..
