Hi Drew back, I have a 54 GF with an original 276GG on it, it's been rebuilt several times and works pretty good except when on the prop stand. However even here in Southern California it won't start 1st or 2nd kick without a bit of choke, so I suggest leaving it on. Also it's handy to use when you are trying to set up the perfect mixture for your bike.
Good luck with it.
Clive