I did a Shep method yammi mechanical seal replacement. After reinstalling the water tube a couple of times, all is looking good except no idle. The bike idled fine before I started and I was pretty careful with the carbs taking them off and putting them back in. The o-rings between the carbs and the heads are installed properly, the boots front and back are in good condition and I believe there are no air leaks. The bike will not idle off choke. Should I just adjust idle with the black knob idle adjuster (gave a couple turns already)? does this sometimes happen for no apparent cause?