That sounds in the ballpark for advance. You may have a fuel delivery issue. Assuming choke is open all the way and you are running with the flame arrestor off. Have you checked for a vacuum leak at the base of the carb. A big leak can throw things off.
SPECIAL PACKAGE PRICING
4 ST205/75R14 Kenda KR03 radials
4 wheels of your choice
Mount, balance & free shipping
CARBURETOR REBUILDING - $125 + PARTS
LED lights, Hubs, Spare Tire Carriers, Chrome & Powder Coated Lug Nuts
PM or email me firstname.lastname@example.org *** FREE DELIVERY ON ALL ORDERS ***