tryin to break in new engine, ruff idle

Well maybe its OK, even those 2 valves you think are too loose. That little spring in the lifters don't seem to do so much to keep the pushrods tight, its oil pressure that holds them firm.

I guess if you have everything and since the intake is off, go ahead and at least that side put the adjustable rockers on. You can see the cam, pull the spark plugs so the engine turns over easy. If you got the time do both sides. You got to pull all the plugs, least i would. You want each lifter close to the middle of the base circle when you adjust that pushrod

Heck once its running again, run it for 15--20 mins at 2,500 rpm. I like using a garden hose and keep spraying the rad down with water to cool it off. Then change the oil and filter and you should be done.

Too bad fuel cost so much and its getting to get worst yet with 55 mpg cars for 2025. One gallon of fuel going to be $10 I'm afraid.