Does anyone know where the idle adjustment screws are on a 1985 holley 4 barrel? Also, the accelerator pump on my front pump seems to be not working, as well as the fact that the butterflies will not open. If this carb seems to be irretrievably broken, will the edelbrock 750 I got for my 408 work on my slightly hot 302? I just want the car to run. Running a little slugishly is better than not at all.