When production of the Model S resumed in 1951 the detail design was improved, many components strengthened and the some significant changes made to the headstock assembly where, in some instances, bearings with detachable caps were fitted and the centre height increased to 35/8". The option was also offered of V-belt instead of flat-belt drive - though strangely this option seems to have been a minority choice. The bed was beefed up by cast-in "bars" running along its edges and vertically below the gap, the slide rest became a compound type and the tailstock was given a sole plate (that allowed off-set for taper turning) and a long handle provided to operate the bed clamp - instead of a nut hidden at the back. The machine shown below is not entirely original. Strangely, not all these improvements were maintained, with many examples leaving the factory with the older design of split headstock bearing and occasionally a non-compound slide rest as well. Another design of stiffer headstock was also employed and used on the Gamages version of the lathe as well.