Hello; The pin Drive "Hubs" I purchased some years ago from George P, they are the Gold Anodized set. The Rear ones mounted in the Aftermarket watts linkage / Bearing Carriers perfectly. The Front ones I bolted on a set of XKE MK3 Vented Brembo Rotors and installed on the Jag XKE Uprights, the problem is when I install the rim onto the Pin Drive "Pins"...it goes on as it should but the Wingnut only threads on a thread or two ( Fronts only). The obvious solution is that the Trigo rims that were destined for use on a Contemporary Cobra were machined with a specific backspace ...that is the magic question. Any advice greatly appreciated, Thank you
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