The cab in the xda post
http://forum.xda-developers.com/showthread.php?t=404345 has been updated with the fix for the "can not forward MMS"
I also just sent myself a text with 184 characters and it came through as two messages. The good news is it didn't error when I received the second part of the locg message. Previously, I had experienced errors with long messages.
I built a rom with dcd 3.2.2 kitchen last night. Then I loaded the MMS cab.