Well what I did was use gasket sealer on the engine side and just kept the valve cover side clean. I had to go in and adjust the valve time but I may have to go back in do and adjust the rocker blocks to zero play. So fast though I have ridden the bike about 10 miles and just developed a drop and nothing more.
'79 BMW R65
'03 KLR650 Sputnik Sidecar