I fitted a 7 plate clutch to my T140 a couple of years ago, and the clutch has always slipped under high load. I fitted 650 springs at the same time as it is recommended, initially tightening the spring until the thread was just entering the straight groove in the spring cap for the screwdriver. To try to stop the slip, I tightened the springs more on two separate occasions so that there was a fair bit of thread protruding through the spring caps to no effect. So today I have stripped the clutch and found that the extra plain plate that was supplied in the kit is of the often found crap quality i.e. not flat. I have posted a picture of both sides of this plate and also of an original plate. It can clearly be seen where there are high spots. Unfortunately, I bought the kit nearly 3 years ago and so doubt that I can send this plate back. I didn't ride the T140 last year as it was at my sons which has caused a bit of the delay sorting this problem. I don't know why the clutch is slipping, unless this plate can be soley responsible, but I doubt it. Any suggestions where to buy a plain clutch plate from that is going to be completely flat? (Like the one's in the Barnett clutch kit for my Norton. Now they were flat). New plain plate. Other side of the new plain plate. Below, an original plate.