John,
How come in reviews I see see complaints about bore damage from these products? Do you think it's possible that these "damaged" bores had pits that were coppered over and when the cleaner did its work the pits were exposed?
I haven't tried the Montana products yet, but will soon as Wipe-Out hasn't worked all that well for me, sending me back for the J-B, which works, but is a lot of work. My brother used an electronic cleaner, but those are fraught with peril for a scatter-brained old timer (Happy Birthday, by the way).
