Default Kitkat SMS and MMS issues

Ever since flashing a Kitkat rom (currently on the most recent PA release), I have had a large amount of trouble sending MMS. Sometimes I can't send them at all, and receiving them takes forever. With SMS, it seems like every now and then it takes multiple minutes to receive a text (With hangouts I can check and see that it was sent 5 or more minutes prior to when I got it). I've also noticed that my signal seems weak for some strange reason. It's always 1 or 2 bars, and my family's iPhones are all 4 bars. If anybody could help with my problem it would be appreciated. Thanks!