If I adjust the throttle as shown in manual, at the mark on the cam, and adjust the link to the tower, the engine Idles fine but I only get about 1/2 throttle. If I open throttle to w.o.t. postition, and readjust the link from cam to tower, it idles at about 2000 r.p.m. What am I missing, I didn't have this problem with linkage last yr. Yes, carb tie bar is set, only other adjustment I see is the one at top of tower for spark control link at trigger, and I dont want to touch that as the engine runs fine. Engine is 856X6L which has a different link at the trigger than anything shown in my Seloc manual. And no, the idle adjustment screw on the tower is not the problem.