I think Reliable Gun & Tackle on Fraser St. in Vanc. may carry it. (Not sure where you are in B.C.) Otherwise, give Dave at BC Redneck (
www.bcredneck.com) a call. It's good stuff.
GM "Cleenz" alternating with Kroil is also a good combo. I read somewhere quite a while ago that someone tested GN Top Engine Cleaner and Shooter's Choice and found they were the same stuff, although I can't vouch for it. I couldn't find Top Engine Cleaner here but got Cleenz (as someone mentioned above, around $8.00/pint- WAY cheaper than Shooter's Choice) and it works well for removing carbon fouling. (Best to use a nylon brush as it may be hard on bronze.) Scrub with Cleenz, let it sit, run a dry patch or two, then run some Kroil through on a brush or patch and let it sit for a few minutes, then scrub with a brush and follow with patches. Reliable G&T also has Kroil. An excellent product. Other CGN'ners might know of other sources.

Stuart