I have a pair of VM's stood up, one Centos 6, the other 5.6 which I will use to see if I can overcome this issue.
If I fix it, I will issue a document for the forum. I'm going to try doing the entire curernt 5.6 document starting out with php53 or php53u installed. Lets see if it works.
The SM issue resolved itself probably based on the fix I tried in 5.6 Perfect Server doc.
isn aka SEP from ITRC forums