stealfar

I'm just new to this forum and new to trials bikes. I bought a '94 Techno (blue and yellow) recently that hasn't been used much over the past few years and have given it a bit of tlc. Thinking it was ready to ride I successfully kick started it first time and it continued idling without cutting out - great. It revs smoothly and there doesn't seem to be excessive smoke. Ready to take off I put it into first, it lunged forward and cut out. I repeated the process a few times with the same result. I've been told that this may be due to sticking clutch plates and these could be released by putting the front wheel against a wall and going through the start up motions. I did this. It didn't work. It just cut out again. I've adjusted the clutch lever but this doesn't seem to make a difference. I've topped it up but not fully replaced the clutch fluid - could it just need bled??? Any ideas as to where to start would be much appreciated. I'm itching to get out on the thing.....