Not my intent to re-arrange what you meant, just pointing out that the Jards have some issue as you didn't specify which one was the problem, unless I just misread it................seen it on 3 out of 3, & Jard's response was less than comforting.
Never seen it happen in a Geiselle unless someone tried to re-tune it to a level that it wasn't intended for.................not saying it can't happen, but I just haven't seen it.
Best trigger available is an Elftmann, IMO.
MM