Oh yes, I should also mention I still have the charger cutoff voltage turned down. The peak voltage I saw tonight before the charger cut out was 56.3V. At this voltage I'm getting no alarms and can pretty much charge without worry. I will probably continue this until I have some form of automatic over voltage protection.
Also, I am not planning on deep cycling the cells for the first couple of weeks (probably a month even). Some digging around on the net shows that some manufacturers recommend not going below 33% for the first 20 cycles. (
Lithium iron phosphate battery - Wikipedia, the free encyclopedia) I figure it can't hurt.