[Mk2] [Turbo] clutch pedal problems

[bazpro]

went out in my rev2 turbo lastnight and have a slight problem with the clutch pedal.
few weeks back while stuck in traffic i had the clutch pressed down and the pedal was only coming up a few millimeters and struggled to get it in gear thought my clutch had gone but when i got moving the pedal was still near the floor so i tried to lift it up with my foot and it sprung up back into position like normal.
car drove fine again, clutch never slips ect.
anyway went out last night and noticed its doing it alot more now but always springs back up when i lift it.
any idea what it could be?
gonna go check fluid now but cant think of what else it could be

[Al-sw20]

Leaky master or slave cylinder.

[Peter Gidden]

Most likely master cylinder needs overhaul.

Kit is about £23 from Toyota. We keep them in stock.

[bazpro]

checked the fluid and was full cant see any leaks.
anyway i got underneath and pumped the pedal a few times and it stayed down again so had a look underneath and looks like its been getting caught on the trim and foam under the steering wheel, there is a turbo timer fitted down there and wonder if it has been getting stuck behind the trim.
moved it all out of the way and going to go take it for a drive see if it has been that but am not to convinced it is.

as for the master cylinder is it a easy diy job to refurb or a bit more specialist? ive never done anything like that before