I'm helping a co-worker bring his P75 back to life. His converter is extremely full of old dried up ink and the squeezer is not fully returning to it's uncompressed position due to overuse. Are these easily replaced?

Modern twist fill converters will work just fine.

I had a heck of a time finding a converter for a 75. See this earlier thread: http://www.fountainpennetwork.com/forum/in...ic=65462&hl=

It turned out that a squeeze converter that was in a 45 fit.

I have three 75's. All take and use a twist converter just fine.. no problems at all. I cleaned and repaired one for a friend and put in a twist converter 8 or 9 years ago. He still uses it and has had no problems with it.