I recently obtained a pukka taper turning attachment for my M300. It looks as good as new and came complete with the bed clamp and tie bar.These parts are often missing from previous offerings I’ve seen (usually on eBay). However attempts to mount it on the lathe came to nought when I eventually realised that the device needs an entirely different cross slide feed screw assembly. The feed screw for the taper turner is a `special’. It’s telescopic – in two parts. The permanently connected taper turner prevents fore and aft movement of the screw portion. On a non-taper machine it’s coupled to the saddle. By this means you don’t need to disconnect the feed-nut to use the device. Harrisons are looking for £675 to put a new screw assembly and feed-nut on my doormat! Does anybody know more about this subject? More usefully does any good soul know of a cheaper source of parts?