Hello all I am new to the forum, and am looking for some help with my autolite 2100. I am running this carb on my 1972 international scout. 266 cid motor. Due to the way these carbs are made I have found them to be excellent on trails in off camber situations. Anyway. I have rebuilt this carb several times using a rebuild kit for a 289 cid ford motor, but can only get 2 or 3 months out of each rebuild. After a few months the scout will not idle I adjust the idle speed up, and every time I can pull every other plug wire and it will not make a difference in the idle. Only half of the idle circuit is working right. Usually I can turn one of the idle screws in or out all of the way and it will make little or no difference. If I pull it off and clean it good and rebuild it will work fine again for a bit. This truck has been completely rebuilt from the ground up. New rubber fuel lines, new inline filter, so I don't know where if any trash could be getting into the carb. Any help would be great. THanks.