does anyone out there have one of these engines...Aircraft International Series 150 TOC...????are you having problems w/ the engine what so ever????i have about 3 gallons through it and still cannot get it to run trouble free...i fly the plane,just IMAC flying,and about 10 minutes into the flight i lose throttle response...meaning i cannot transition from 1/4 throttle to midrange or full throttle...the engine starts to make a hollow pinging sound(i am running cannisters),and the throttle is basically useless...i land,and check the temp on the engine and it is fine.i have all the proper baffling to cool the engine and to suck the hot air out of the cowling and tunnel for the can's.i am running a little on the rich side,i tried playing w/ the needles and same response.i tried a little more oil content to see if this would remedy the problem...no such luck.......is it possible the Tilliston Carb is getting hot and the diafram is sticking???......IF ANYBODY IS HAVING THIS SAME PROBLEM OR ANY PROBLEM W/ THIS ENGINE....PLEASE LET ME KNOW....Thanks,Joe