It would appear that JBMindustries is no more (at least their website doesn't work). Has anyone found a good source for new diaphragms? On the 700, they are slightly warped and not wanting to stay in the groove. One side has a noticeably weaker "whoosh"
Found some a few months back. Takes a lot of google, cross-referencing part/model numbers and all searching in the ebays and webs.
There's a page somewhere that sells the rubber by itself and shows how to change the slide, I've posted the link before.
edit: almost forgot, look for Harley and Arctic cat , same carbs.