italian bike? wtf are you on about ken?
rocco, ive put these on dozens of bikes. stock to kitted. 50cc to 80cc. never had one melt ever. im assuming from your story that you must have been making some kind of contact somewhere, probably a worn flywheel. either way, loosening the bolts to the coils will allow you to move them ever so slightly before re-tightening them.
i mean i can eat all the rooster you want but it isnt going to change the fact that you either had a bad part or put it on wrong.
its not the stator, the stators are great. use common sense, put things together like you work on motors and itll be fine.