Getting ready to trade my Rocket in but I have a slight miss in the engine at idle and low RPM's. I just recently replaced the Primary TPS, adjusted to .60, reset ISCV, and now I have a miss. I have gone over everything I could think of that might be causing it, replaced plugs, cleaned and lubed all connections under tank, cleaned crank sensor, I'll probaly pull and check it again just to be sure. All the plugs looked good except the second from the front was darker then the rest of them like it may have been misfiring. I've read on here that some have tested the coil lead to the plugs and found bad, and replaced the lead, if so how do you test???? and how do you replace if bad???. also is there anything else I should look for tha could be causing the miss, dirty injectors, etc. I've been going all over the bike to make sure everything is good to go, even though I'm trading it in I want the bike to be solid