I say horsehockey to all that told you to get rid of the Linn. I was in a similar situation as you not too long ago, was told to ditch the Linn, but instead I upgraded the Valhalla to a Lingo and the Adikt cartridge to a Lyra Argo. Yes, I let my ears guide me...not participants on an audio forum who had not heard the deck in question. Solved the problems. Is this setup a rival for the Walker? Heck, no but it also is signficantly less expensive. Will it rival an SME 20/2? It comes pretty darn close. And, yes, I have heard both in the same environment driven by the same gear.
FYI: you've got the phono preamp that I strive to own one day! However, I have discovered in demoing phono preamps, that my LFD Mistral kicks the tail of most under $1500. And, cost me sufficiently less.
For those who are making recommendations here, make sure you know the dog before you kick it. If I were you, I would take the Linn to the next steps with a NEW Lingo and NEW Argo Lyra.
Good luck in your quest.