I got my nu50 running very well now. It has great pep, everything is stock and she goes about 32 mph. I did a compression text today and I saw its supposed to be about 180. I hooked up a compression tester to the engine, opened the throttle all the way and cranked on the kickstart and I was surprised to see it came in at abt 40! Am I doing somethin wrong or is that really what my compression is??