On far left and right you can see the Hammond hairs. The center pic is after cleaning. Zinc oxide formation or Hammond hairs . This is not a fun job but with a can of DeoxIT, a box of Q-Tips and a day, this is the result.
This is from my 1964 B3 After cleaning
This is also my 1964 showing the fact that it has no R.C. network.
Normally, it would be where the X is. The R.C. network is an added set of filters
introduced in early 1964 and this one is early 64 One of only between 150 and 200 ever made without the R.C. network.
At left, a new felt cover has been made for the generator and on the right, a tech fixes a broken coil wire.