70 Challenger T/A – No Idle, runs poorly after lifter/pushrods replaced

Long story here.... Seemed like a simple job, but I did a lot of things at once and want to verify if I'm on the right track. I had a lifter that was making noise, I could not stand it, so I replaced the lifters and pushrods. The cam showed no strange wear and compression was 150psi+ per cylinder, so I decided to just do the lifters and pushrods, it's the original engine, so I made sure I got the overall length right. I also replaced the metering block on the center carb with a new part...

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