Well, I will answer my own question. One inherent issue that i believe caused this trouble was my blast parameters. I had 100 genomes and I only allowed 250 hits since I was concerned about diskspace and time. Orhtomcl acutally recommends not limiting this (
https://docs.google.com/document/d/1...xqDAMjyP_w/pub).
I figured that 2.5 orthologs in each genome for the same gene was enough, but maybe not. I am currently rerunning the process with a larger allowed hits and hopefully this will fix it.