Hi Steve and welcome to the forum

Regarding the tram-lining, it could well be worth having a close inspection of the steering head bearings. The root cause may well be the tyres, but it is well documented that the headstock was terribly under-greased at the factory. Sticky, tight or corroded bearings will give the very sypmtoms you describe. Get the front wheel off the ground and investigate how smoothly the bars flop from one side to the other.

Good luck getting it sorted.

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