backfocus repair - cost, time, place?

[tisbone]

hi, I got an 80-200/2.8 ED-IF (the two-ring one) on ebay and it does back focus

at 135mm-200mm.. First question is - does it happen quite often that a lens

back focuses only at certain focal lenghts?

I'd also like to know how much time and my money (no warranty) it usually takes

for Nikon and/or the other authorized services to fix it.

If you have any experience on that, please let me know. thanks

[ellis_vener_photography]

I'd try it on multiple bodies before you send it in for repair.

[tisbone]

I did.

[bill_keane2]

I'd asked about such an issue with a local camera shop (well respected). They check and adjust focus, on site, while you wait, saying it's a simple procedure...