Attempts to hijack the thread aside...
The one problem I encountered while putting up the pegboard and hardboard was that, as some sheets were stacked in different piles, they were warped slightly differently, so some of the edges would stick out more, or in more, etc....
I was stumped until Mike recommended putting small pieces of extra wood behind the errant corners and screwing all four corners into it. Now they are just about all flat and lined up perfectly. I tell ya, that boy is always thinkin.