I received an 'interesting' request from a potential customer. But I've got to find a way to tell them, 'No thanks' politely.
Back story: Several years ago, I responded to a request to provide some consulting services to a local utility. They needed some assistance with 'configuration control' problems in their engineering department. Specifically, they were getting behind in doing as-builts of their system. In the course of talking to them, I learned that the root cause of their problems was that the crews just went out and built stuff without engineering drawings, leaving the engineers to go out after the fact and figure out what had been done. I managed to talk to a few of their crews and discovered that there was an old personality clash between engineering management and the workforce. It seems that, for many years, they had a blowhard a*hole in engineering and, in spite of his retirement years ago, bad feelings persist. Management loves the guy, but the crews think he was an idiot*. I managed to sidestep that job by bidding too high.
Years pass and they are still looking for help. They have contacted me (strange, since I haven't done any work for them since I spoke to them last) and want me to consider the work again. My connections tell me that the atmosphere is still sh*t between management and the crews. I don't want to get involved in organizational politics. I'm going to send them a 'Thanks, but no thanks' letter, but I don't and to burn my bridges completely. There may be some interesting actual engineering work I could do for them. So I don't want to tell them, 'No' for all cases. But I don't know if it would be wise to hint at the real reason.
Some people suggest that being forthcoming is the best policy. But I've found that stepping into the middle of personality problems is a bad idea.
*One worker told me that it was a pretty good company to work for and he, "could clean up all the problems with one clip in his .45".