[Spits] Clutch judder

[Stuart Greenwood]

I reconditioned my engine and fitted a new clutch 7500 miles ago. The clutch
has started to judder badly and I have to use more than the normal amount of
revs to get away smoothly in 1st and 2nd gear.
I don't rhink rhat it's due to
oil leaking from either the gearbox or the engine getting on the clutch plate.
The engine mounts don't look too bad... haven't looked at the gearbox mount
yet... all were new 7500 miles ago.
What other causes  might there be?
 Stuart a Greenwood
71 Mk IV Spitfire, 71Mk 1 Stag