@GG1 4877 posted:
To the topic, I have the JLC 4925 and I have not experienced any issues with zinc pest. Mine has run fine over the years other than the automatic pantographs are a bit touchy.
I also have the JLC #4925 and no hint of zinc pest. I poked and prodded everywhere to see if I was going to have the problem, but solid as a rock and runs fine.