Well How about that, , Backstop, Eh? . Never ever done heard about Backstop, I just used Loc-Tite on threads. I reckon I really am behind the times. where do you get it from?
When I need to dissolve stubborn chemical adhesives I reach for the Just be careful and don't get it in your good eyeball or even your face, wear rubber gloves, a face shield or goggles when spraying it, It permanently fogged up a good pair of safety goggles for me.
Crud in a Carb or throttle body isn't the only thing it will dissolve, melt, or remove, it contains Tolulene, acetone and some other powerful solvents.