I ran a Wire brush along my spars and roughed them up, ( Lightly) then blew them off. ( after reading about this some time back)
Phillip Matheson mathe...@dodo.com.au Australia VH PKR See our engines and kits at. http://www.vw-engines.com/ http://www.homebuilt-aviation.com/ See my KR at Mark Jones web http://mywebpage.netscape.com/n886mj/pmkr2.html