The Schley Products Universal OHC valve spring tool makes short work of disassembly or reassembly of the valvetrain. It is a fine American made tool.
I modified the stands slightly so as to fit the studs for the cam cover.
Besides being about ten times easier to use than a C-clamp type valve spring compressor for bench work, I use the Schley to remove valve springs and replace stem seals with the head still on the block. I love it.