I went out again the other night and was imagaing and guiding without problem on the east side of the mount. I did a flip, and again recalibrated PHD. Same thing when it was guiding, it was cycling north and south by a fair bit. Now it had my attention. I checked for loose bits on the mount and guider, all was well. I purposly changed my perfect balance to load against the Dec worm. Still no change. I then dug around in the keypad for the backlash settings and had '2' for the RA and '3' for Dec. I remember a long time ago setting these per the procedure in the AP manual. I increased the number for the Dec and the graph went really bad....so wrong way....tried level 2, 1, and 0. Now the mount is tracking properly, or so it seemed for the 10 mins I let it run.
It appears that the change I made corrected it, is someone able to help me understand what was going on, and what I did wrong? Attached is a pic of what the graph looked like before I changed the backlash numbers.
*edit* I'm using a SSAG and V1.9 of PHD