I was asked lately to put a new point in a de-nibbed Waterman Skywriter. This took more than the usual amount of work; apparently the point has been out long enough for the section to shrink to fit the feed by itself. ...and in the course of working on the problem, I find that the feed itself is made of celluloid. This befuddles me, and I want to check with the collective intelligence about how to proceed on setting it, because as things stand the point/feed gap is enormous. My first instinct is to proceed as one would with a rubber feed, but gently, on the basis that damp heat will certainly deform celluloid and at a lesser temperature than rubber calls for. But since this is an entirely novel situation, I hesitate for fear that the feed will shrivel to a nothing. Informed opinion? Shared experiences?