After a lot of head scraching I decided that what the trigger on my walther LGV ultra needs is a new hole ( I was very proud of getting it straight and true ) and 20 mm M3 grub screw nearer the first stage screw on the Rowan enjenering blade . That way I got the blade where I wanted it , shortish 6mm first stage travel , lightened but safe second stage weight , and after a bit of careful filing on the litle block ? Of the side of the blade I could still get the safety lever to slide over said little block on the side of the blade and work fine .
Put the rifle together everything worked perfectly for 20 shots , then the rifle started to Cock but not fire !!!

Took the rifle appart again , opened the trigger cassette again checked all is as it should be , examined very closely all surfaces , readjusted the grub screws a bit put it together again and the same thing happened !!
It works ok with the barrel cocked/ drawn held in my hand , but if I close the barrel to take a shot it will not fire .
I'll take it appart again letter on today , I think the plastic spring guide held by the 2 parts of the cassette while being held ok , was wobbling a bit and don't remember if it was supposed to do that

I've been at it on and off for couple of weeks now , any help will be greatly apriciated , thanks