The end of the original mk2 rod is a different shape to the mk 3 , though the latch sears are identical , both profiles work fine in the mk 3 .
yup, and WD and ISP are different profiles again... I have had this problem once, so not making it up... rod was way pi55ed in the piston; bore of guide was loose enough to allow it to not centralise, got kinda stuck on the way into the trigger housing. It;s not exactly likely, but seeing as we seem to have exhausted all the sensible causes...
Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.
The Brim OD of the guide is a V snug fit in the main tube - in fact it was oversized as supplied, and I reduced the Dia to give me a snug fit - thinking I didn't want any lateral movement.
I haven't noticed any witness marks on the trigger block - however I will re-strip and investigate.
Many thanks
Steve
Just re stripped the TX and removed a slip washer that I had put under the top hat......It now cocks.
With a Mk 3 V-Mach spring it makes 8.5 f lbs, with the Mk2 Knibbs spring, its at 11.2 f lbs.
New seal, so will put a tin thru it and recheck.
Many Thanks for all of your comments...shame I made a school boy error
Cheers
Steve