The supreme's can't have been too unreliable, the one i picked up, got home and put fuel in and it ran! though had the base worn away at the sides and the rings are worn out, yet there was bugger all carbon buildup. I would say it has done some work for sure.
I discovered that the muffler can make a Big difference to its running, once I re packed that it ran like a dream. Being that they fire together if the exhaust is unbalanced it will not transfer or scavenge properly. I even found a supplier that makes new rings for them. I will pull it back down one day and fit them.
The biggest problem with them was/is the lack of understanding of them. You cant treat them as a normal 2 stroke. Properly maintained I don't see any reason it would not be reliable, they just simply need a bit more maintenance and care than the normal old 160
Side note the engine was actually a Canadian design, typically used in model aircraft. There is no Victa branding on the barrels
