I had one a few years ago, a Mk3 6.5-20x50. I had bought it off the bay at a silly price and found it had been 'set' for HFT and wouldn't focus over 100m. I sent it back through the UK importers. It went to Germany, came back in 6 weeks fully sorted with warranty intact. Cost me postage only. I decided after a while it was too much scope for my purposes and I eventually sold it on a forum for twice what I paid.