I posted a load of details on here about tools I found when doing valve shims under my 'valve shim removal tool' thread, but it's disappeared.
Anyway, the point is that I found that a Teng 18mm spark plug socket also fits without modification. It works well with my Teng 3/8-in drive socket set, using the universal joint for the middle plug on the Trident. The rubber in the middle didn't grip the plug though, so I used a bit of hose for that.
I found that I had to cut down my T30 torx bit and allen key to get at the rocker cover bolt and cam shaft journal bolt at the back beneath the frame though, and use my 3/8 Teng torque wrench rather than the ratchet.
I also found that the Triumph valve shim removal tool was a complete waste of time - it's since been sold on Ebay. Removing the inlet cam was less scary than I'd expected, and big smiles all round when the bike started first time having been a pig before I'd replaced four of the inlet shims.
