Slave on 147 TS is concentric to the clutch release and expensive to fix (it's a gearbox off job). Hopefully, your problem is with the master, behind the pedal. A new one will cost about £50 and would be a 15 minute job if your engine wasn't in the way. There are several threads on here about replacing and bleeding the system (it might be worth trying to bleed it first).
Mine was sticking at the bottom of its travel momentarily until the retaining pin (R clip) on the pedal broke and the cylinder dropped off. Since then it's been okay (so far anyway), so it might be worth trying to replicate what happened on mine. Take the R clip out, disconnect the cylinder, let it drop to the floor and leave it there for a while, then reverse the procedure. I don't know why this helped with mine, but it may be that there was some air trapped at the top of the cylinder that dispersed back through the plumbing when the cylinder was inverted. There's only a slim chance it will help, but it's a free fix if it does. It will at least give you a good opportunity to inspect the cylinder for leaks.
If you have cruise control, you may need to reset the switch - search for my recent post on this, where a couple of members were very helpful to me.