I have one Double presently, a Merkel 140.2.1 and have called GSI for questions(no real problems) and they have been most helpful on the phone. I am going to call them about a stronger Spring on the safety(per others safety problems) and see if there is a ?stiffer one available.

I do recall Grizzly stated he had a problem with a Heym but don't know how it was resolved or if it was resolved to his safisfaction.That would be interesting to know.