have your tried adjusting the dizzy? theres a bolt on there just undo it, but before that make sure everything is lined up, and then undo the dizzy bolt and take it out and adjust it very slowly, it should be pointing to the coil pack if its correctly lined up.
if everything is lined up take the distriputor cap off and see if its pointing to the coil pack, if it aint then adjust it till it is.
correct me if im wrong, as the mechanic i used to use did that to my cousines golf.