I don’t have a Linn, however, I have heard two superb LP12:
1. vinyl passion - everything looked at and improved - machining quality is wonderful.
2. The funk firm - not sure if they still make it but also a vast improvement over any Linn based mods (I heard a direct comparison) - it changes to a clever 3 pulley drive.
don’t be bought in or conned with buying Linns own