Butler tool IS a
Prochem.
KleenRite is ok too, once i made a
glide for it, it was even better, but those tools have a lot of hand work in each glide, not a money maker, but I do one up from time to time for existing customers.
We sent out a few a prototypes at no cost, but didn't get much feed back, I just wrote it off as a human thing, in fact we've sent quite a few glides out like the
Butler 3 jet, but never hear back.