To answer the question about crank to cam rotation you need to get detailed instructions on setting the timing.
As for obvious problem when pulling the cover, I would say too much slack in the chain on the passenger side vs. the driver side.
You will have to pull the cover to gain access to the chains and tensioner.
I'm sure you can find or make something to hold the cam, I have the tools so have never tried anything else.
I don't think the parts stores have these tools for loan.
OTC Cam holding tool: