Harmonic patterns ratios help needed

So i just want to have these all clear in my mind because for some part the info is hard to find.
Gartley:
A-B = 0.618% but what is the minimum?????
B-C and C-D and B-D all have minimums and maximums which is great
X-D = 0.786 but what are the minimum/maximum here?

Cypher:
AB and BC are fine
CD = 0.786 but what are min/max here?

Bat:
All fine but - A-D what are min/max here?

Those ratios are correct.
By the book, retracement XB should be exactly 0.618% and XD 0.786%. (referring to Gartley)
You can safely deviate from that with I would say +or - 5% of that value.

Ok thats great, so just look for pretty much perfect patterns for the legs that need exact ratio with a small bit of leeway

Trading Harmonic Patterns is all over the web, even here on FF.
For instance here is a thread: https://www.forexfactory.com/showthread.php?t=166155

Oh nice, that a good long thread to read through. Thanks.
I'm gonna buy scott carneys books soon, i know you can probably find them on the web but i like hard copies

You're welcome.