Hard to start when cold

I would move it back yes. Dont worry about what the instructions say about emissions, you want it on ported vacuum, go back and read post #26. Then I would get your hands on a timing light and vacuum gauge and post some actual numbers of what your motor is doing. There are members here far more knowledgeable than me who can help you more seeing some actual numbers.
So we origanlly had it set to the left port and had it set to 5 degrees BTDC and it ran like crap.