Yes Peter, a little bit of higher tire pressure makes a lot of difference. I never would demand any power steering on a Plus 4. even with the closer steering gear ratio of the Plus4 SS i have no wishes for a power steering (the slightly bigger steering wheel compensates in addition - you know, what the ladies like).
With my Roadsters I had no wants for a power steering as well. Power steering on a trad would be the beginning of the end. And the 3.7 engine isn´t significantly heavier, or?