Thoroughly deep cleaned the drum cylinder inside and out as well as the screen. How can I rule out that this isn't still an issue with the screen? I ran a TON of prints to try to get rid of any remaining cleaner and still no luck. I also increased the ink density setting when testing. Also, I tested my other three drums to rule out the GR3750 itself, and all three are working fine with no issues. I am inclined to think the screen which is well worn and has been sitting still may be the issue but I soaked it in dawn soap and hot water several times and then a deep clean with WD-40.
I have yet to work on the squeegee unit but from what I can tell all looks to be working fine, the ink distributor looks to be working too. What I do notice is that there is a LOT of ink sitting on the roller. Not enough to hit the overflow sensor but enough to touch the ink pump sensor. Note in the pictures below the amount of ink sitting in the foreground of the squeegee unit. The last two photos are the front and back of the master.
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