i have had a few of these over the years. do the compression test!!!! these will run fine at 130 but wont start once they reach 90 lbs. these are piston port so have to have good compression. there needs to be enough compression to pull the gas into the cylinder. at 90 they will run but once you shut them off forget it. the crank seals are easy to change, about an hour for both sides(moose sells the seals)but that was never the problem for me. this has happened to ours 3 times. i bought the wiseco piston and gasket set off ebay for about 150 and it cost 60 to have the jug bored out.
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