ChrisWilson,
I hope I might be speaking for the all of us, that we have scared the OP away from trying to use any regulating circuit, use any of our circuit ideas, just by our comments.
No one has said here that the regulators could cause damage, we are just ranting over current sharing.
Must we always say, without a reasonable doubt, that for the safety of all, and without extensive proof and laboratory testing, that there will be fire and smoke and burnt filaments, that if you tried this idea if would ruin your equipment, that it is in fact so dangerous, so experimental, and that it doesn't really work well because of some assumed "sharing" problem?