Economical replacement rocker arm set?

I sure would.....good time to cut open the filter too. Also, put moly cam lube on the 2 new lifters. Do everything as if it were a brand new.

OK on the tick. What oil weight are you using? Lighter weights tend to cause more lifter ticks, in my experience at least. It could be oil heating up and thinning out, or just expansion of the parts as the engine warms up.
OK, I will find some break in additive. I already have Rislone added to the current oil. Will that harm the additive I put in for the break in?

I cut the filter open on my last oil change, a week ago. Noting to speak of there.

Running 10-30 weight. Prior to all this I was running 20-50. My oil pressure is about 25 it idle and 60 at RPM so I didnt want to go with a thicker oil.