With all the threads about MSD ignition problems I have to send out a praise to the MSD Ignition Tester PN 8995.. I fought starting the boat out on the rope every pass this last weekend.. We tried to fire her on the last pass of the day to head to the lanes and she wouldn't fire.. We started trouble shooting it and I put the borrowed tester that Scott Cone aloud me to use on an interim basis and found that the magnetic wheel went bad.. We could have easily spent an hour or so swaping out coils and boxes but I put the tester on and it verified the box and coil were good. My oldman verified, not by choice, that it was good also. For anyone running MSD ignition with a pick up I suggest you pick one up.. Sorry if this is useless, not sure how many people know one exist!!! I also found by changing the magnetic wheel the ignition timing changed by 4*..