My beloved (and extremely sharp) 35-70 non-D has developed a case of element fogging/fungus. Can't quite determine what it is, but something in there is obviously hazy and I'm getting a lot of flare. This is a real hassle, as it is my favorite lens to use on my D70 in most circumstances. I priced out a repair at Fixation of London (where I am currently residing), and it could run up to as much as 170 pounds (roughly $330) to fix. I can't afford that, especially considering the age/value of the lens. I can't afford to buy a similar lens from KEH when international shipping is included. I *definitely* can't afford a 28-70 AFS, which I am lusting after. And I don't want to spend a nearly equivalent amount (actually, over here, a lot more) on a third-party lens if it doesn't perform as well. Plus, I have a couple of other items of equipment that need fixing that I know I'm going to need to fork out some money for. Finally, I have no compunction about taking apart things and fooling with them--I enjoy learning how things work. I can get a replacement element for 40 pounds from Fixation. That I can afford. I've got a bit of free time at the moment. And I'd really like to get this lens working/replaced. At present, it's screwed, so I don't think that ripping into it is a terribly foolish or risky proposition at this point. So how hard would it be for me to attack this sucker myself, with any reasonable probability of success? (I'm not easily discouraged--I consider at least a one in eight chance of doing it successfully to be good odds.) Any advice anyone can offer? What is the procedure for disassembling the lens? Beside a spanner wrench, are there any other specialized tools necessary? If this is an utterly quixotic proposition, can anyone recommend a very good and reasonably priced 28-70/80 2.8 lens (yes, it's got to be that fast--I shoot in low light quite often) that I should consider looking at new? Thanks in advance for any advice you can offer.