[searcher451]

Thanks for the advice. Next question, what does the trigger spring look like, and how does it mate to the trigger bar. I don't think my PPK has one! Only by fussing with the trigger bar can I get the problem to repeat. It looks like the trigger bar is failing to move up into the cut-out on the slide from time to time.

Good morning. You might want to try the following link:

http://www.pistolsmith.com/index.php

This site is staffed by professional gunsmiths who take great pride in answering the questions of both fellow smiths and novice gunowners. While there is no section devoted strictly to Walther pistols, you shouldn't have any trouble getting some knowledgable advice. Good luck.