ORIGINAL: 5150flyer
One note - my Syssa was in an EF 78'' Extra which means the carb is partially behind the firewall. That makes everything related to the carb way more complex.
That will happen if you leave the firewall as is, pretty much across the board in any ARF.
In the thread I started on that subject, I moved the firewall avoiding that same situation. Far easier to do that than to have to play with a blind set-up of the carb. FWIW to you, but sounds like a bit late to do you any good