I would never take the electric choke of this carb, these chokes work very well. Over the years I have seen carbs that were destroyed by people who do not understand how they work. First does the choke fully open when engine comes up to its correct tempiture. If it opens fully this is not causing the carb to run rich, you could have high float levels, leaking seats and other problems. First you need a good holley manual, which will take you through the steps to set this carb up and repair if it needs it. This is a simple carb to work on, however it is better to have a manual for all the adjustments. I wish I could be of more help to you, the problem your having could be due to a number of things. Dont be guessing, find the problem, its not that difficult. My son had one of these carbs model 1850 electric choke, he had it all out of adjustment. I took it, made the correct adjustments, float level, fast idle, air mixture, accellerator pump, checked power valve, and choke settings, now this carb runs great. The factory put that choke on for a reason and if working right will fall off a little at a time as the engine warms up. I think the fast idle is about 1500 rpms.