I had one and loved it. Sorta hate that I sold it. The .61 likes a rich low end setting and a somewhat rich high setting as well. They do take a bit longer to break in than other brands. Run the engine on the rich side for a while, but not too rich. You do need a higher heat level to break in the engine correctly. When running a bit on the rich side, the engine isn't going to have tha power as it would if it were more lean, but in time it will accept the leaning of the needle and not dead stick on you. Give it time, it'll come around.

John