Which carb would you get?

388dart has kindly offered to let me try his 650 dp speed demon. That along with some other pointers make me hopefull to get my problems resolved.
The impression I am getting from my current carb is that the primaries are working fine but when I stomp on it it works like it is only using the primaries.
As near as I can figure this is all part of the build process. You have to allow for getting them sorted out.

Jack