I did a similar post on AOPA (I spread the word when a company does well, why not when they do poorly, eh?)...any way, a very lively discussion of JPI and their business practices is taking plac here:
http://forums.aopa.org/showthread.php?t=80717&page=2
I had no idea how many people would jump into the fray, so quickly. Apparently JP has been building a reputation, and not necessairly a good one.
A bunch of posts recommending folks look at EI products instead...while I have loved (literally, and had always told anyone who would listen) my EDM 760, maybe its time for a switch to another brand.