Hey guys don't hesitate to deal with aburton, he has been running grp's for almost 2 years now and knows them inside outside and backwards. They are probably the most popular engine here in alabama and alan has been really helpful in keeping a lot of them running. I personall had a grp sleeve pinched by him-motor was bought used of a member here said it had 9 gallons-burton pinched it and so far I have run it for about a gallon with zero probs. The pincher is really nice-no clamp type (no egg shaped sleeve). He also offers a lot of other services rc related so check him out on "THE SPEED SHOPL thread here on rctech
Hey burton I got the engine heater yesterday-looks like it will be the bomb on the break-in stand. If you didn't live so far away I would run by so you could see it