I have a 1987 2.0L with a stock Mikuni carb the screws have been tampered with that controls the free lever and everything. I desperately need to know how to get all the screws and throttle opening settings back into factory specs! I am buying a weber carb with mounting kit soon enough but for the time being I need this carb to get me up a hill faster than it is now and the truck is running a bit rough at idle but not on a rev it runs fine. The distributor is set with the timing light also.