3:2 in favor of lefties? Curious... what gives? It's been said here and elsewhere that RH sells more than LH, but, presuming their initial stocking was equal, were there 400 more back-orders for RH? 
Funny that you should write this. I was just thinking about the preference for one hand of turnouts, but I couldn't remember if it was rights over lefts or vice versa. That said, it's probably one of the following that occurred:
1) MBK mixed up the quantity of lefts and rights that they wanted; OR
2) They were unable to get their full order filled on the rights; OR
3) Someone placed a monster order for approximately 350+ rights.

DFF