Engine idle setting

Hello fellow Hudsonites,

I recently decided to make some testing regarding my Tranny leak given by my local mechanic. We've tried to set the egine idle lower as it was high, but since that time, the engine stalls when geared on Drive only.

I've checked the engine rpm's and found out on the readings that the engine is idling around 1930 rpm on Park. This looks quite high for me and I have to solve this issue before proceeding to the main test. Unforntunatley, I don't know exactly how to set it. The engine is a 262 Twin-H configuration and the carbs' models are the 2013-S.

Any idea of where to look?