Finally adjusted the striker closer to the burner.....I cleaned the contacts, then was looking at the flu, and noticed the striker was about an inch from the burner.(must have bumped it taking the burner out to clean it) That did it..
Thanks for the input everyone.....
2003 Norcold 1200LRIM won't start on LP when disconnected from shore power. Must be manually cycled numerous time to finally start on LP. Then will only run for 2-4 hours. I have cleaned the burner, checked striker distance to ground. Control board maybe?