UPDATE:
I put the reel back in its box and "forgot about" it for a few months figuring I'd just order the replacement part once I needed the reel again next year. Fast forward to a couple weeks ago and I was cleaning out my fishing cabinets in the garage and came across the reel, so I figured I'd quit being lazy and just call Abu since email got me nowhere (as previously mentioned). The guy on the phone was pretty straight forward and nice enough. He told me to just send the reel in with a brief letter detailing my story and the service department would take a look at it.
I sent the reel in 10 days ago and was pleasantly surprised to already have a package from Pure Fishing waiting for me today. I opened it up thinking it was cool I never received a call requesting payment of some sort and that they replaced the stem without charge... and then I was shocked that they sent be a brand spankin new reel despite the one I sent in being out of warranty and in good shape overall. 10 days from CA to Iowa and back... that's incredible customer service. I'm definitely not getting rid of my Shimanos and Daiwas by any means, but Abu has definitely won me over with their customer service and will have me as a fan for years to come. I figured the least I could do was pass this story along to let you guys know they went above and beyond.