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Great video!
Before you replace injectors, I highly recommend getting your pressure tests done and verify you're in range. A shop that couldn't find poor spray pattern also likely failed to do the pressure tests correctly. Poorly-atomizing fuel is a big reason why it won't idle right - but not the only reason. You're going to find the rest of the system is out-of-wack as soon as you replace injectors. Baseline everything first and then make changes.
It is curious you've got dark fuel from two injectors; I've never seen that...
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