magnum
200 mph is a bit optmistic this would mean revving at 23,000 plus on an 8x10 (theoreticlly achivieving 200 + mph)
West engine likes weston fuel (warrenty is void if its not used )
try dropping your oil content to 15% ( make sure that its by volume and that the oil is a good synthetic like EDL form model technics uk ( please note that an engine will run ok on less oil
but will not throttle or idle porperly below 12 %
extensive testing by model technics have proved that even 5 % oil will protec tyour engine without any significant ware but
because of idle/throttle problems not advisable unless your goin venturi