Try Rick at Audio Alternative. He has been a Linn dealer since 1978. He might have some.
Contact Rick at The Audio Alternative in Fort Collins Colo., he is everything LP12/Linn amongst many other fine products. But if anyone can help you it would be him.
As a side note:He just re-adjusted my LP12's Rake Angle and I am continually amazed at how much information is in those little grooves.