I can tell you the rear cyclinders are fired from the same coil. I'm away from home but a quick search brought up this dan-marc install tips.
http://www.valkyrieforum.com/bbs/index.php/topic,13483.0.htmlDid you connect to the black white wire? Make sure the contacts on the coil were cleaned if you pulled off the leads.
If you front four are firing the fuel valve is energized you may have just knocked the wire off the coil.
Not much help but it is a start point for you.