In between the low and high of plonkerdom I did find the time last weekend to go take a look in two of my auxiliary storage devices for missing Lathe parts, sadly the search yielded nothing. I couldn't access storage device 3 as I had stacked Land Rover number 3 chassis and rather a lot of Dexion pallet racking behind it blocking the door. I fear though that I do not have any more bits, despite being convinced that I had a slection of fibre change wheels.
On the subject of change wheels I did some tooth counting on the two piece unit the samller diameter unit has 100 teeth, the larger 120. I have a feeling they may not be Harrison, and possible Boxford. My Norton Gearbox is also an Imperial 36 speed, not Metric by the looks of it, so I'm not entirely sure if my loose pairing are compatible anyway