I have a book on setting up biplanes and it say 1 or 2 degrees negitive on the top wing is the way to go. I have a Sterling PT17 that has -2 and it flys pretty well. I have a great planes laser incidence meter and it has more than paid for itself. So you set the horizontal stab and lower wing per the plans and the top wing 0 to -1.

Thanks you've been a big help.