Glad you posted this S. I've got a qj with an APT so the straw trick won't work. I've got a spare carb and a vac pump with a gauge but didn't realize that you cound hook it up to the port to check how much vac it takes to overcome the spring. I'll have to try it one of these days. It's one of the things that has bugged me since the last time I tuned my carb. Thanks for the idea.
