I do belive I have a new one. I will take some pics and measurements and post them for you. Is your's the one with the four screws holding the drum and carb in or just two for the carb??
The piston sleave is 1.924" tall, 1.064" id, 1.223 od and 7port 8 if you include the exhaust. I did not take it out of the package to measure the piston so the measurement may be a tad off (thickness of the plastic).