Thanks to the Sync CLI Guide for Dummies: http://ficoforums.myfico.com/t5/Credit-Cards/SYNCH-CLI-FOR-DUMMIES-A-COMPREHENSIVE-GUIDE/td-p/4378522
Husband called and went from $800 to $6000 on Walmart (Started at $600 5 months ago and never put more than $10 on this at a time at Sam's Club.)
Then he asked the same rep about Amazon and went from $4800 to $6000 (started at $1500 4 months ago, rest was done with Luv button. Heavy use on this one, always PIF)
He asked for 10k both times, and they countered with 6k. He has a lot of inquiries. These are his only two Sync cards. This is awesome for us!
BTW, we are big Target fans and never step foot in Walmart. We only have the Sams membership to buy gift cards to our favorite family restaurant, which we pay for with a points card. It is endlessly frustrating that the Walmart card is better to us than the Target card and feels so backwards. Maybe someday. 