I'm looking for a cable release that will fire my Pacemaker Speed Graphic's focal plane shutter on all speeds.

Currently I have a very nice cable release which came with my Linhof, but it only fires the FPS in specific shutter speeds: for example, it works for 1/50 and 1/250, but it doesn't work for 1/125 - maybe the curtain is wound up more tightly at that speed and needs more force in order to "fall down".

There's a ton of cable releases on eBay, but I don't know if they fit my needs.

I am situated in Europe (Athens, Greece) but I have no problem paying USPS postage for a cable release that will put an end to my endless hassle with the body trigger.