If you are using one drawing I see how you might get confused. Here are both drawings together. On the left bank the two farthest from the pigtail are out lets.Do you mean magnifying glass trying to see in when the pintle is open?
When I was cleaning, I blew through both sides of the solenoid and I also filled the top with brake clean to make sure it didn't leak before I opened the solenoid to test it for flow down. I know gravity vs. 100 bar is totally different but I also wouldn't have missed anything in the opening that's visible like that. I spent hours between a few days messing with these things. However, there's a lot of space internally I can't see or access where crud could hide.
I thought B2's intake cam inlet/outet were now B1's exhaust cam inlet/outlet solenoids? Inlet for inlet and outlet for outlet but opposite cams on the different banks.
On the right side the two that are farthest become the inlets.
It is better just to reference this drawing ( at the very bottom) but make sure to use Version 3 because it was done to correct a few mistakes from version 2 of the same drawing.
That picture of the noid is just a demonstration that some stuff may not come out. It was not mine and did try and buy it to get a closer look, but the price was higher than the desire to see it. Clearly it was junk if the thing could not be cleaned but half price was too much for my curiosity.
Having rebuilt many a board I can tell you that they don't always come clean with just air or brake cleaner. I had a bath of kerosene that the noids would go in and be activated on and off for 24 hr between to air cleanings, but occasionally I would have to take one to a ultra sound station to further assist. Some I could never stop leaking.