George,
Well as we discussed before you went en tour, I'm really happy with mine now, not that I had a problem before! I took over 3200 shots a week last Sunday, a local running club paid me a fee and I handed over a disk with all the shots on it, warts and all, then later I was at the quad bikes, pics are on here somewhere and I was happy with the outcome!
Last Sunday I went to Knockhill, again pics on here, and the faster moving targets convinced me everything was ok.
I'm not saying that I had 100% keepers but I could see a difference!
One thing it has highlighted is the 70-200 2.8 IS does not focus so well in bright light. I have tested this today and I'm convinced the pics look a lot sharper if the subject has for example trees for a background rather than say a light grey harled wall.
I've spent the afternoon microadjusting the lens with the aid of my sons eyesight, lol, and it's now at +10 so we shall see how we get on in the next few days. It seems to need +7 at the 70mm end and +13 at the 200mm end. Any ideas?
How was the holiday, or are you still on it?