Tinman - I was running it on the rich side as I'm still running it in. Actually now that I think about it I was at 2 1/4 turns of the main needle. The one time I leaned it by a half-turn, so 1 3/4 on that side.

I have four other YS .53s. One on a Somethin Extra, one on a Top Cap. I had one on a .40-sized ME-109, replaced with an OS .52. (too much power for the airframe. bwaaahaha.) The other two on the shelf waiting for someone to get off his arse and assemble some planes