I have a rather old two stroke that doesnt run right if the gaskets don't seal correctly. I replaced the gaskets and applied Permaseal #2 on it a couple winters ago. When we launched this year, we motored for 4-5 hours without issue. Once we got on the lake we found a severe loss of power. Upon inspection I found a substance that I believe is Permaseal leaking. The engine was slathered with RTV when I got. I spent a significant amount of time cleaning that off the surfaces. I had a machine shop check a number of mating surfaces for flatness. Is there an alternative to Permaseal that isn't RTV?