GUESSWORKS now has available a shim which is designed to be placed behind the larger of the laygear thrusts. This is to overcome the issue of oversized thrusts being difficult to obtain.
Designed for the A series and A+ 4 synchro gearboxes, shims are available in two sizes, 0.004" (0.10mm) and 0.008" (0.20mm) priced at £1+vat each. They are also available in a trade/multi pack where you gear 5 of each size ( 10 in total ) for £7+vat.
These are made in house.