Mike, you have to understand that a Linn supplied LP12 has a definite sound all its own. In fairness to Linn, the tonal aberrations (fruity bass, vague imaging and ill defined treble timbres) have been substantially tamed over the forty years of its life to the point where lovers of the 80's LP12 "sound" seem to dislike the current, more neutral flavouring. You've already gone against the grain by using an ARO, which has the potential to remove the plump and often ill defined boom of the typical Ittok and Ekos setup, together with the brash, "clanky" and tinkly sound these latter arms can have with the wrong cartridges fitted.

Put it this way, even the early pre-quartz Techies can sound outstandly good with sub 2g tracking cartridges (no SPU's here ), as long as the siting is attended to (VERY important).