| Thanks for the info, I’ve had this problem since I got the bike last year. I changed the pressure plate bearing (which was seized!) at the same time as putting the new seal and piston in the slave cylinder.
This cured the problem for about 5-600 miles but it came back with a vengeance. I’m thinking I may change the fluid to DOT 5.1 to increase the boiling point, I’m assuming the seals will be OK with this, has anyone else used this? | 
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