compression help

Thanks everyone for all the info. I checked the carb mixture screws and adjusted the and now I have 30 plus at 750 now. the brakes work some better but after you hit the brakes o
the first time the petal is hard. Thanks again. If anyone has more info it is surly welcome.
30 + With that cam ? Sounds high , that's more than a stock 340 . You sure the gauge is working properly