RE: Welcome to Club SAITO !
I don't keep complete record of how many hours and minutes I run an engine. This 80 was on a Dave Splatt Waco YMF3 for two years and it was flown 3 or four times most weekends except for the winter, It was then on a Goldberg cub for about 5 years and flown quite a bit. I would say it would be safe to say it has in excess of 30 hours on it. I bought the engine in Sasebo Japan in 1980 and used to just run it on a bench because I liked to hear it run. I think if the silver solder joint was going to fail, it would have done it by now.