Don't trust the ohms readings anyway! I've got a box full of bad stators that all ohm good. The lighting coils and the ignition coils are seperate as well. (checking the lighting voltage don't tell you anything about the ignition output. The only way to test an AC ignition system is running under load. The last one I failed ran fine up to half throttle, then got sick when the pipes turned on. Drove me insane figuring it out. Stator ohmed good, but was junk.
Faulty stators normally run worse the warmer they get. (will run worse if you can get it to run long enough) Will sound like it's dropping a cylinder but not enough to be able to tell which one. (spark is still there, just very weak) Catch up with me if you still need help nailing it down.