Hi,
I had this problem on a 97 Techno a while back. Replacing the plates is the right thing to do. As soon as i put new plates in mine it worked perfectly. Never had to worry about it again. Wondering whether your clutch is going to stick or not can be quite nerving, especially half way through a section. In my bike there were shinny chrome plates with dark gritty one inbetween each one, i replaced the dark gritty ones. Also use Automatic trans fluid.
This is what you need ---> http://www.in-chains.co.uk/static/RACE%20L...-TRIALS-CF7.htm