Hi all. I am in the process of trying to correct the touchy throttle effect in my 2009 CRF 250X about which I posted previously. I recently removed the throttle cable cover from the carb and was greeted by another “D” type adjusting screw – for the AP timing adjustment. Honda also thoughtfully enclosed most of the screw and spring in a cylindrical metal housing, making access to it similar to the “D” type fuel screw, except the AP timing adjustment screw is much larger. As I understand it, older bikes of this model had the throttle cable pull the AP actuating lever via a spring. The O ring mod or stronger spring reduced or prevented the delay in actuating the AP which was caused by a weak spring. Turning the adjusting screw clockwise increased the gap between the cable lever and AP actuating lever, which would increase the delay in actuating the AP and could increase the bog effect. In the newer bikes, the situation is reversed; the throttle cable lever PUSHES the AP actuating lever. This eliminates the delay caused by the weak spring in the older bikes. It also makes for a very touchy throttle, in my case anyway. In the newer bikes, turning the adjusting screw clockwise would also increase the gap, but would decrease the delay in AP actuation because the throttle lever would then push the AP actuating lever earlier. This is my understanding of the situation; please correct me if I have overlooked or misinterpreted something. I am in the process of attempting to correct the touchy throttle effect; I am installing an AP cover with an adjustable leak jet, since that has been reported to have solved the problem on some bikes. If that doesn't work, I will go back in and try to adjust the “D” AP timing screw, but it was already adjusted pretty far counter-clockwise (the stock gap is about .038”). Two questions – does anyone know if Teflon grease would be OK for the carb air boots; and does anyone know if there is a socket to fit the “D” AP timing screw? Thanks.