Re-assembly going strong today with lots of bits back on. Trying to put the throttle gear back together and appear to have lost the accelerator cross shaft!! Have everything else but...... I have a slight fear it may have got mistaken for a spare bit of metal and used in a welding project?????

Can't find one on eBay - are they easy to track down?

It's a essentially a a metal rod. Try a reputable independent supplier (Paddocks, Craddocks etc).

All sorted now!! (Thanks to Wireman!)