Intermittent miss now full time?

I have a 93 t-100 p/u 334,000 miles, ran strong, always over 20 mpg's then an intermittent miss started, than went to full time miss, I did the easy stuff, new plugs, wires, rotor and new distributor cap, unfortunately it didn't do the trick, I started removing one plug wire at a time while engine running to identify the bad cyl. notice # 2 and #6 does not change how the engine is idling, did a compression test and seems as though all are around 125 psi. any ideas, I thought injector, but 2 of them to go bad at the same time, I think would be unlikely, any Ideas or other things to try???? I luv my truckIntermittent miss now full time?
low fuel pessure and or injectors..

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