Re the steering. I have never driven a 911 or any variant. I did read some time ago now that all of them since the original 911 and 912 all SEEM and FEEL as if they have imprecise steering and the technique is just to let the wheel "dance" a little in ones hands and the car will go exactly where it is pointed.
So... to you past and present owners... is this the way they are or did I read some apocryphal stories those years ago?
When I was a newb at autocrossing I asked an experienced 911 driver for pointers, he said to stop steering so much.
Half the steering in an older 911 is done with your right foot. When powering out of a corner you can feel all that mass is behind you with all the weight on the rear wheels and the front wheels are only there to keep the plate from dragging on the ground. You correct your line with inputs from the gas pedal about as much as with the steering wheel. If you're doing it right only one front is really touching anyhow.
Front tires only wear at about a third the rate of the rears.
I do let the wheel "dance" somewhat, if I get really crossed up I sometimes even let it go to straighten back out. Maximum caster angle might have something to do with it.
(all info pertains to older 911's, 996 and newer are more balanced, but not too different)