I botched a shutter on one (last time, I give up, all I did was take the speed ring off, honest!) and decided maybe since I'm in belated spring-cleaning mode (for once), I'll just unload some stuff on eBay to absorb the cost of CLA. I'll probably still take a look at both the 2nd camera collimation method because it's intriguing me. I already cut ground glass for all the cameras in question, but got kind of disgusted with my Midas touch.