aandtpile

I have a 2001 Montesa Cota. Recently, my clutch was slipping so I tried to fill up reservoir and bleed air out of system using brake bleeding kit. It seemed to bleed air out of system, but there is no pressure in clutch system when lever is pulled. Manual says to replace clutch slave cylinder seals which have never been done. Bike only has 500 km. Any advice, and if parts are needed, where would I get them from? Thanks. Andy