Three questions that I could use help with:

1) Is there a chart somewhere that gives the equivalency of the true count value of different counts? Something like:
TC 5 Hi-Lo = x in K-O, y in Red Seven, z in UBZ
TC 4 Hi-Lo = x in K-O, y in Red Seven, z in UBZ and so on.
This would help me a great deal when reading books and messages by authors using different systems. If this doesn't already exist, I'm hoping someone can produce one for permanent reference.

2) I use Don's Catch 22, play pitch games, but and feel I missed learning something somewhere about when to stop hitting a stiff hand. Usually with hits, two is trouble, Three is threatening and four (and up) is fatal. I have heard (without documentation) that you should stand on any three card 16.
Is there a shortcut to use when determining how many hits to take?

3) Soft Eighteen- any different? If you hit A,7 and make it worse, do you keep hitting until you make it or break it?

Thanks,
Sentry