Hypereutuetic pistons and nitrous??

OK, I'm even more confused now than before I asked the question about nitrous use with hypereutetic pistons. Let me add that I have also posed this same question on other automotive websites with basically the same results as here. 1/3 of you say go for it, one third say don't go for it. and the remaining third aren't really sure. Let me rephrase the question to get more direct answers.
1. Has anyone had problems with their motor that had hypers installed in it that you know for SURE were caused by use of nitrous.
2. Those that did have a problem, did you have the timing retarded at least 2 degrees per 50 horsepower of nitrous,...example, 150 horse shot---take out minimum of six degrees upon nitrous activation.
3. DID you also take other precautions such as installing spark plugs as much as two heat ranges cooler than stock.
4. DId you use a nitrous shot in excess of 150 horsepower?
5. DId you use 93 octane and add some after market octane booster as well.

I would like to hear from anyone who did steps 1-5 above and STILL had a problem.

Thanks