I have 2 40 FPs 1 25fp and a 15 fp and i can not get them to idle at a slow speed when i close the throttle they start to slow down and then suddenly stop. as if some one throws some thing at the prop. i cleened the carb dilled a biger air bleed hole and tryed different fules, but i found out that if i leen the main jet terribly it will idle abit my other engines with a dual neadle carb work perfectly i cant understand what is wrong.

Laurence[:@]