The S has recently started sticking in Park and it takes a good tug of the selector to free it 

I rarely use the car now as I have a little Jeep Cherokee 2.5 as my daily driver. The S only gets used once a week to the local supermarket 5 miles away.

The Jag is currently for sale so I would like to try and sort this out, is it merely lack of use - or something more serious 

I've not noticed a click. it sticks when I maneuver the car in my driveway - moving from drive to reverse to park the car in the tight space as soon as I put it in park it locks up 

On Friday I'm going for a 60 mile round trip on the motorway in the Jag, hopefully that will blow out the cobwebs !.

I think the torx is only on the xj, not the s-type.