Poor throttle response

Always start with timing. It's free, and in your case, needed. I'd go 20° initial, ad I'd bring it in faster than 2200. as a first step. My thoughts on upping the squirtor size... You cannot add fuel volume without it being over a shorter time. So that shot ends earlier in the throttle's travel. I've never had to use a squirtor larger than 31. I tried 35 and 37 on a couple cars. The 37 slowed the 60' down by .03. They come with 28s IIRC. I'd start with the timing, because once you change the timing, the carb will be affected. Carb wont affect timing.