Thanks for all your comments, it has taken a while. The forks, I got fed up trying to get the commando forks to work, new stanchions, new bushes, new springs, did the conversion thing, still sticky.
Then Classic Bike here did a road test on the Dreer Commando and i loved the heavy forks, looked at ebay for ages and one day saw a set of Kawasaki ZX9R 49mm forks for £100. They are the same length as commando forks and i liked the way they looked the same as commando ones, just fatter. (good technical expression)
I made the yokes, steering stem, brake caliper adapter etc but my little lathe was too short for the wheel spindle so got that done at an engineering shop.
They seem to work quite well.
I bought the bike, from a photo, from a main Triumph dealer here, absolutely standard black roadster, they took it in a trade in, they had been servicing it for the owner, they MOT'd it, they would put it through their workshop before delivery, all lies. From Triumph dealer of the year 2000, 2001, 2003 etc. You can't trust anybody.
Head steady broke, isolastics completely gone, they charged the previous owner for new fork bushes, only one was new, it took me 2 hours to remove the other one. It looked good in the photo but was a mess.
A warning to all others.
Jim