Below is a picture of a old cam chian guide laid on the replacement bag in the update kit in which you can read the part number clearly. do not worry if this guide does not look like your old one I have seeen the part change 4 or 5 times now Number 4 and 5 look very close to the same thing and one of the 05 blades was close also. I can hunt up pictures for all the ones I have. if you want a look. I have collectec some for comparison when I was working out problems with them verses higher tension valve springs and the manual tension APE makes.
Yours was a 06 not sure if it was a black engine or not if so it might have resemmbled the one below minus the shoe modification.The last two being of the newer style but still modified.
No I don't I got the blades as a kit the number on the web site is a company generic number PFKL1197927 don't know if this bears any resemblance to the triumph number. Like your idea for an anti kick back stud: Run a adjustable stud down the centre and have it just off the auto setting point. will have a go at making something like that myself.
Thank for the help, will get an order in for a tensioner to play with now too.