(I plan to begin experiments tonight on old FPR ebonite feeds to get more information.)
However, I would like opinions on the topic of ink-channel restoration.

Question: What potential materials can be used to reduce the depth of an ink channel in an ebonite feed?

I am thinking that contact cement (rubber) layered in thin applications along the base of the feed channel would restore it's depth from deep to shallower.
Another candidate, Acrylic Resin. (The same that some pens are made from)
I have a good feeling that this material will conduct ink properly if laid into the ink channel and then the ink channel re-cut to the proper depth/width using my Jewelers saw.
I believe this will work because plastic feeds are made from similar material and conduct ink well enough.

Opinions?