Hi, will take a closer look at the original Triumph petrol tank, and take some measurements, I think all the instructions on the transfer are in the rider handbooks, the steering damper knob was deleted on later models, so could be two versions, also there is no oil tank drain and refill transfers available for this model.
Regarding Golds, please email me some pictures, we have lots of gold colours we can work with in vinyl, slighly more limited with the waterslide stock. If you have a picture of the matchless that would be good. I have been meaning to look over this artwork and maybe on the next batch we can change.