Compatibility in Synastry is based 90% on aspect dynamics. Planet position is not as important. Here is why.If you were to look at and analyze a Synastry Aspect Chart without looking at the pie chart at all, you can come to a conclusion on how strong the union is solely on that data.
The M conj. SA is not the best of aspects to determine Synastry compatibility because this aspect suggest an influence of distance between the individuals.
There may be an easier way to read and understand complicated Synastry pie chart aspects. Pie chart aspects can also be produced onto a basic Synastry Aspect Chart, a color coded chart. Review the sample chart at your leisure. It may help you gain even more insight than you currently have.
http://risingpeople.wix.com/synastry-aspecting
http://risingpeople.wix.com/synastry-aspecting#!in-the-closet-astro-tools/c1s43
Once you have it loaded, your aspects will be in the following formation. You can then apply some questions.
Here is an example:
http://www.linda-goodman.com/ubb/Forum11/HTML/008126.html
Slowpoke