Linear Troubleshooting Training? Help!

I could use the advice of anyone right now...we are currently in a situation where we need to try to train our analysts on linear troubleshooting. We have been unable to find any reference on line, other than lateral thinking puzzles and such. Does anyone know of any company, website, newsletter, ANYTHING that could help us? I have found that I can train on the proper resolutions for specific scenarios, I can provide documentation, but I can't seem to get through to some of the staff on how to take those extra leaps. Any ideas?