The key was the code for First-Class™ Package Service. Seemed like other threads pointing out the 'service' vs 'package' vs 'parcel' yada yada were misleading or not compatible, or just wacked.
Anyhows, here was my issues with 6.1 hopefully to save some other person hours of grief. I installed 6.1 (didn't bother with a) successfully, but the First Class rate was appearing, but without the title. The rate would appear, but when clicked to checkout, it would default back to the top option, whether it be Express Mail or Priority or whatever and customers would get charged for that service unknowingly. After struggling with the freakin' USPS naming conventions on my own, I stumbled on #1233 above, copied the piece into the usps.php from 6.1b (not a AND overwrote the one from 6.0), and it all works now. The rates are shown, correct, and when selected follows through the checkout process perfectly.
...what a nightmare for something so simple...
USPS United States Postal Service (1 pkg, 0.47 lbs total) (First-Class™ Package Service
---Delivery Confirmation™
---Approximate delivery time from mailing date 1 day) $4.33 [select]
USPS United States Postal Service (1 pkg, 0.47 lbs total) (Priority Mail®
---Delivery Confirmation™
---Approximate delivery time from mailing date 1 day) $6.75 [select]
USPS United States Postal Service (1 pkg, 0.47 lbs total) (Parcel Post®
---Delivery Confirmation™
---Approximate delivery time from mailing date 2 days) $7.90 [select]
USPS United States Postal Service (1 pkg, 0.47 lbs total) (Express Mail®
---Approximate delivery time from mailing date 1 day) $14.35 [select]
Edited by kepa, 10 April 2012, 18:04.














