the both leaked really bad, from the bottom seals when I got them, one shaft looked real good the other was scored, (replaced all seals) repaired and polished the 1 scored shaft with "Belzona" polished the other,sold the the one to my buddy $50 bucks, the one I kept (smaller) nice shaft still leaked, even after I tried 90/120 gear lube. i should knock it a part and either hard chrome the shaft (not) or sleeve it,decided to put a zerk fitting in it and pump it full of a good quality automotive wheel bearing grease..... no leaks or knocks or issues so far ....a small (1 drop) leak from the oil cup when i oil it.
I used to come home after work every day for about 2 weeks and run it for about 20 minutes just to make sure it did not develop problems.... still running , still quiet, and no leaks, both machines cost me $50.00 each, rebuild cost was unde $20 bucks each 3 cans of brake parts cleaner , a small can of rust-oleum gray, few seals around 6 bucks a pop...and of course elbow grease