Misfire cyl. 1, high STFT?

CEL started flashing while driving. Going to hook up my scan tool and record, will update findings

UPDATE

I cleaned the MAF, installed new cap / rotor, checked resistance on plug wires and verified I was getting 60 PSI fuel

STFT numbers Bank 1 have fallen more in line, 0- 10. LTFT now moves about as fast as the short-term from 10 - 18, when it was below 10 all previous tests

And now bank 2 is showing negative fuel trim -10 to -20, where as it was fine an hour before during the test drive before replacing cap and rotor

To top it off it now is throwing a p0300 random misfire, where it was just a 301 all previous times

I'm going to double check all my work next time

When I was just chasing the #1 misfire, I was thinking the injector tip may have been clogged while installing the new spider?
. While watching live data, 02 voltage and STFT seem to look just fine, wasn't seeing a rich condition, and they were moving in conjunction with each other as they should. Wouldn't that mean that there is not excess fuel making it through?

Any thoughts or ideas are greatly appreciated

Update

Compression test showed even over all cylinders

Installed new plugs after taking compression test

New cap, rotor and wires

Smoke test showed no vacuum leaks

Not seeing any exhaust leaks

Replaced downstream 02 sensor, but it's still steady.035. For the first minute it read about 2.5, but then fell back to a steady.035

All live data readings look normal, except for STFT B1 at +15.

The replacement spider was an upgraded aftermarket unit. The only thing I can think is that it's faulty, and maybe I should switch back to an original style spider with the poppets

This one's got me scratching my head, any and all help is greatly appreciated

Ordering a new Delco spider, and will recheck EGR during the swap

Thanks again for all the diagnostic help

Will update next week