I haven't received the Leo Vince yet but I've been planning ahead for a baseline carb setup. The SM630, while it has a different engine, has the FCR41 carb. It is setup with a 58 pilot, a 180 main, and the same needle as the 610 (OBDVR) except it is set at the 5th position rather than the 4th position on the 610.
I'm going to go with the 180 main to start. I may try a JD needle from the 450/510 kit with a 45 pilot, or go up to the 58 pilot and move the clip to the 5th position with the stock needle. Still have some time to figure this out but the thought of 60+ hp is starting to affect me. I can hardly wait!