a lot of the 85's develope a leak at the jug gasket. they have been playiing around with different gasket material and sealants to correct this. I should get mine back in a few days. being a big single piston engine it has its vibration issues. I've gone through some mufflers, had my carb bolts loosen, (which I heard they are replacing the alum. ones with steel.) and had to add extra cowl mounts cause mine kept falling off. (probably just my planes design) It does start up perfect every time. never had a dead stick. and tons of power for a 33% plane.
steve