My 72 has an Edelbrock that runs like crap, used a 1/4 tank in 25 mi. of highway the other day and won't start cold without starter fluid. I also have an extra Qjet laying around. Should I have the Edelbrock rebuilt on the engine, or have the Qjet rebuilt and bolt it on and pull the Edelbrock and e-bay it or something. I have never rebuilt a carb, so I'm not sure how difficult it would be for me to do myself. And, once the Qjet is rebuilt, should it just bolt on or will it need an experienced hand to adjust. Thanks.