Help with suspension on 2004 te510

Hi Guys. I am a UK member and have a 2004 model te510. The previous owner has put on supermoto wheels and I intend to use it for road use. Mainly as a weekend toy. I do feel the suspension is quite soft. I was thinking of changing the rear shock spring and front fork springs/fluid for my bodyweight. 110kg. The person I usually use for suspension accessories in the uk deals with K-tech although they dont provide anything for my model. Does anyone have any information on the forks. I was asked if I knew who made the forks... if it was a sachs fork. Any advice on this would be much appreciated.

The forks are marzocchi 45mm. The shock is a sachs.

I can't seem to get springs in the UK for my bike. I may be placing an order with Racetech for springs for another bike. They sell springs for a 2004 te450. Does anyone know if the springs for the 2004 te450 would be the same as the 510 ?