For those who are interested in Mass Pressure theory, I found by accident a topic Pinned to the forum and makes interesting reading. Larry Williams, Paul and Sergey discussing the for and against this theory. I have attached the thread as PDF and the relevant PDF given by Paul.
I know little about astrology and hence cant make head or tail about the subject. For those interested, I hope you find it useful. And if you can explain to laymen like me, it would be much more helpful and useful.
Resume Gann Mass Pressure Theory from Paul.pdf
UsingSynodicCycles_MassPressure.pdf
URAn.wts1
GannMassPressure_Theory.pdf