Hi all.. I have been reading some of the post and of course I'm corn-fused yet again! My truck has a manual choke and the heat rised weight and spring are gone by the PO. As I understand it no heat riser is is needed if you have a manual choke...my truck starts fine and sometimes huffs and puffs through the carburator after sitting for a week or more upon start up...maybe I'm pumping the gas pedal too many times before I hit the floor starter button..it warms up fine and is ready to go in about 3 or 4 minutes...am I missing something good? THANKS, Steve