Thanks for the input but its a square taper(y'know just like I said),I am aware there is an octolink version but this is not the one I am after nor is Craig as I believe he has the same one as me with the fixed & adjustable cups the other way round to normal(with the adjustable on the drive side), weird I know.

This Shimano BB seems to be rebuildable as there is a narrow nut & threaded section on the non-drive side(another reason I beleive mine & Craig's are the same BB)

Like I said the drive side tapers are noticeably fatter than the non -drive side(again very weird) so I am going to try a 127mm standard Shimano BB with my Tracer crank & will post again if this works.

I can see from the original posts that I am reaching back through time somewhat but,Craig did you ever sort out your BB issue?