Thanks Roger, I think I have found some seals that will work properly. We shall see. When I have done the seals I have another question. I bought a head gasket and wonder whether it is installed dry, The old one was stuck really hard to both the head and case and split apart when we pried the head from the crankcase. Yes, using cylinder compression wasn't enough to loosen it, so I just wonder whether it was coated with castor oil or something else before installation. I did buy an incredibly expensive new head gasket and I would hate to ruin it by not installing it properly. Anker