seen a secondhand, Pre-Fitted, Tonerider TRP1 on the bay for £26 posted... Daft not to..
(cheapest i've seen is £39 from Northwest Gtr via Amazon)
Destined for my P Bitsa (to replace the one donated by @Rumple that he thinks came from an SX) for softer warmer tones. Hopefully they will fit my cream covers.
EDIT: Don't fit my cream covers, pole centers out by a smidge.