I read about an easy way to fix the problem of losing oil pressure in the cam when removing the decomp parts. Once you have removed everything from the camshaft, thread the 5mm hole where the decomp pin used to be with a 6.0mm x 1.00 tap, reinsert the small cam that operates the decomp pin with the flat surface facing the threaded hole, and lock in place with a 6mm x 12mm set screw. You may have to take 1/2mm or so off of the socket end to countersink it slightly. Voila! Oil flow problem solved. Just make darn sure that you clean and thread lock that set screw.
Using this method, you can easily restore the cam to original operating condition. I don't think the threads will do any harm to the pin once reinstalled. I'll post pics once my batteries recharge and if there is any interest, but it's a pretty simple concept.