I am finding that I really do not need the choke most of the time anyway, with the accelerator pump carb, it starts by blipping the throttle a couple of times. This assumes there is gas in the carb of course! Hopefully, I will get some more time on it this weekend and see if the button heads, clamps and teflon tube from Cody allow me to fly it for more than a couple of minutes before the pipe blows off!
For the velocity stack, did you guys ever consider the OS GT-55 stack? I don't want to take off my Syssa right now, what is the center to center distance of the Syssa carb screws? I measure the OS carb screws to be about 1.25 inches c/c. Tower has it for $21.99 BTW.