Linn opinions still retain vestiges of the cult once surrounding Linn (and NAIM). To some, a Linn represents a b&w TT decision- either you are for or against. A Linn is what it is- a highly advanced AR XA. Given the design, there are inherent limitations regarding what can be done to improve the table. If I were in your situation, I would investigate power supply and bearing upgrades, combined with a full setup by a competent dealer. The later should include new springs, rubber grommets, bearing oil, recheck of arm geometry etc. In sum the Linn is a very good table that you will have to spend a lot of money to meaningfully improve, or improve upon.
Disclosure- I own a late 80's LP12/Vallhalla/ Ittok LVII/ AT 33ML-OCC combo
Disclosure- I own a late 80's LP12/Vallhalla/ Ittok LVII/ AT 33ML-OCC combo