does autozone sell a adjustable screw that can function as a idle screw if attached to a vacuum line? I have a s2000 TB in my gsr, but that tb does not have an idle screw. In the past, i got it to idle perfectly by taking off the TB and adjusting the plate. Over the yrs, the idle has gone lower and lower, probably due to crap accumulating in the TB. I dont want to take it off again and adjust the plate. Does anybody know how to make a idle screw. I have a free vacuum line that i capped off on the manifold. I was wondering what is the best way to make that an idle screw. thanks