try a p265 cut down to a p255 dia size and thin it down till you think it will fly apart (don't even try this with a bronze prop, stainless steel only) shove the strut down at least 1 3/4 inch, no more than 6 to 10 oz on the drive strut, pull the head squish down near to zero, open up the combustion chamber till the plug starts to live on 60 to 80% nitro, run a carb with a low end needle so you can lean the low end to make it snap on will and run that on the lean side, then run the top end on the rich side so when the motor is obout to overheat due to the lean low end needle setting during the mill before the race , bingo, over heated motor with a rich main at the start , you will put out lots more "i'm gone" power that only last for about a lap so you better have the inside lane by then cause now your rich top end needle setting cooled the motor down, although it gave you a good starting blast, now your in the toilet, unless you have a third channel to start leaning on the top end needle and I hope your already on it. is all this really nessary? no. the second you get on the third channel your driving line just went south, (like a dragster driver looking at oil presure gauge and just about went off the track) it all happens that fast. if you run a third channel fuel air setup, better set in frount of the tv and get at one with it before bringing it to the track cause it gets real ugly learning how to drive a third channel on the coarse with other boats. got a few miles behind an mto/ sport 60 and have found that this boat likes controling the water instead of water controling it, or a happy motor (lean side) any time I sent it out with a rich setting the water killed it. I have done better throttle down in the rough as lettin off due to rough water, off throttle sunk it. bouncing off the tops kept it alive, I think hours behind wheel with this boat will produce a winner, as it has very fast accelleration and speed but needs a driver capable of learning and not overdriving its limits. very fun boat, spectators love the dance it does.