Hi Barrie
I can help with a good used mainshaft timing pinion, see contact details in first listing under spares wanted/for Sale section
Pete

If you don't find any, I have a few new ones spare, for the cost of a postage stamp.

They are 7/32", if using new balls check the seating is good, no raised lip present, and tap/lap seat

The 1954/5 inner primary cases had a cutaway to enable the breather to blow directly on the gearbox sprocket. With the introduction of the FERC and oil drip feed from the tank, the protrusion on the back of the inner chaincase (and cutaway) to shield muck being thrown off the sprocket disappeared.

A word of caution, I once extended the breather pipe with a bit of fuel tubing to exit just above ground level, to avoid previous problems of oil mist making its way onto the back tyre. This was after an engine rebuild, when the internal breather setup had been renewed with new parts. Unfortunalely,...

The outer cover on GB boxes fitted to AJS/Matchless models (1956/7 ) is the same as the HT cover, the original GB box fitted to a VB is likely to be a GB6/GB40 depending on the year, but the outer cover is the same.

I have a NOS set of Milemaster +040 rings, PM me for more details

PM sent

Adobe just displays the file, once the print icon is selected (top RH corner), it is in the printer display menu to select print options. This may vary depending on the make of printer

The downloaded copies of Cheval from the AOMCC repository are in a pdf format containing all of one issue in a single file, but to print individual pages you just need to scroll down in the pdf viewer (Adobe Acrobat usually) to the page required, and in the printer menu select print current page, or...