Ok, well I finally got to tear into it and see how she looked inside. Pretty dirty as expected since it was just retired from cafe duty.
Mind you I have NEVER worked with any type of espresso equipment before so this was certainly a first. I found the SJ very easy and intuitive to dis-assembly for cleaning/maintenance.
I took the hopper off and got rid of all the beans, and ground coffee in the hopper. I then removed the burr carriage, removed the burrs and inspected them. The burrs did not feel rounded off at the edge but they felt smooth to the touch as I ran my fingertips across their edges. I was told the grinder was 4 years old and I imagine these are the original burrs. When bargaining over price, I stated that the grinder would most likely need a change of burrs to help hold my ground over offer price - she made no counter argument at all to that claim haha. I would add them to my order from 1st-line however they are out of stock

Im thinking about ordering a new set from espresso parts.
Next I fiddled around with the doser and figured out how to take the upper sweeper out followed by the clear plastic inside that makes the "windows". The sweepers were badly caked with residue so I thoroughly cleaned them and replaced them. I also cleaned the plastic as it was covered in residue and writing from some green paint marker. That coffee residue is hard to get off! I am open to tips on this!!! The window to the doser looks MUCH better now and i am very happy with it. I also learned that the material is fairly fragile as it was wanting to crack as I was cleaning it. My SJ seems to also be missing that "cowling" that is by the chute. Not worried about that though since i will be sweeping the chute out regularly.
Afterwards I cleaned off the burrs, burr carriage etc.. and re-assembled it. Went together quite easily. I then HAD to run some beans through it so I could play with the adjustment and experiment with its sensitivity. Since I do not have my espresso machine yet, i dialed it in for french press so i can put her to use right away! I can't wait for coffee in the morning! I did a 21 gun salute for ancient blade grinder - j/k lol;)
Anyways, enough yapping - here's a few pics of the filth factor, enjoy
here are a few more pics:


