I kinda gotta go with Jimboroo here Rich, you need to narrow down the variables first, if you are having trouble on multiple finishers and multiple razors then it is either you or a stone in the progression before the finishers...
Go back to the basics and stop after the Norton 8k and shave, if that is a go, then pick one finisher and proceed to just work that one on that razor until you work it out...
That was my 2 cents :)