Yes sir, I tore them down and the slide guides are pretty bad along with being seized along with some other things. I had to find another needle to put in the place of the stock one that was missing until the new one came in. Got some more carbs that were about as bad as the original ones, one of the needles in one carb was half corroded away. Another had pits in the needle. Seized up and corroded badly but 3 of the slides and guides look good so now I've gotten them freed up I will mix and match the 2 sets together lol.
You are absolutely correct sir in the assumption of there's abundance of nastiness in the motor, I've flushed it four times now, once when I put the clutch cover on filled her with diesel and left her to soak for a few days. Drained that, filled her again with diesel and ATF un seized and spun her with the starter I drained that, then filled her with 50% motor oil and 50% ATF while I was flushing out the head and valves then I drained that replaced the oil filter and refilled her with Rotella before putting the carbs on. The oil is already brown again. Still waiting on 6 clutch steels to get here, I plan on dropping the oil pan and cleaning it up also as it set with the clutch cover off for years. Sorry for the looong reply but I wanted to document what has been done so far so I can keep up with it.