Bobb

Friends,
My clutch pedal has been sticking for a few weeks now.
I’ve replaced the slave cylinder and bled the system and for a little while that appeared to do the trick, however the pedal went to the floor and didn’t spring back.
I’ve now rebled the clutch and sprayed the release arm with WD40 and a lubricant.
The pedal now appears to be operating normally.... but for how long?
Online, this appears a common MG TF fault and an updated release arm is now available.
My question is, should I leave it now it’s working?
Or for the want of £30 should I replace it.
Is it an easy job to do??
TIA
Bob