I had a couple of hours free yesterday, so I took it to bits and put it back together with the Cirkus bearing and the Tacia Mushrooms from RS.
Setting the height was really simple, no bounce or arm dressing to worry about; I used M5 thumb screws that made it even easier.
I had a quick listen last night and was quite shocked in the improvement it clarity and imaging; especially vocals, they just sit there between the 'speakers now. I get the bass bloom comments now it seems to have gone.
Changes where Cirkus bearing, sub-platter and sub-chassis, new arm board and the mushrooms, the removed parts where white liner bearing, sub-platter and bonded type sub-chassis, older laminated arm board and 'nirvana' springs and grommets.
Taking it apart, lots of the parts where Linn tight, the old laminated arm board has indents where the arm collar and arm rest was fitted; I put it back together with a bit more mechanical sympathy, tight enough.
It's just plonked down on an old TV unit, with a thin magazine under the right hand side to make it level...
It has a trampolin 2, which worked better than no base in the old set up on the same TV unit.
Started looking into cartridges now, vinyl may be making a comeback in my system..!
I didn't do anything to the top plate or the plinth, I will probably take it to bits again and change the mains cable and the tone arm cable, but that may be some time as I want to listen to a few more records.
Thanks for all of your replies.