Hello Richard,
I'd echo your assesment re performance, my AI version is great at 3m but rather lame shooting at 10.
What I can't reconcile is that its performance at distance seems to have faded since it was professionally cleaned
and lubed. This is a quick'n'dirty scan of a KR slide taken exactly 40 years ago, it hints that the (then 2 week old)
lens was capable of reasonable centre detail at distance.
I bought mine new as my first Nikkor (on a F2AS) and used it very heavily in its first decade. I'm left to wonder if
if things changed on reassembly or if it's just suffering wear and tear. Maybe, like its owner, the older it gets the better it was!!
Hans Schepers