Got a 95 EX and am replacing the head gasket, etc. Right now I'm putting together the head and just got done adjusting the valves for cylinder #1. Next I was going to turn it 180deg to do the #4 cylinder but can't seem to turn the camshaft at all. Is that normal? Do I really need to wait on the valve adjustment till I have the head and timing belt back on?

Thanks for any input.