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...
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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