Default Trouble sending SMS on VRUFNCS5 from root MJ7

So I followed the instructions on this thread:

I also saw people comment that they were able to replicate it without problems on MJ7 phones.

Everything worked great for me, except ever so often my phone just stops sending SMS messages. I don't have a problem receiving them.

And this will last quite a while. On a couple of occasions I've rebooted the phone and it sent the texts. Not sure if I'll just have to do that every time.

Did anyone else experience this issue?

Anyone have any ideas?