Edit authentification without full reflash?

[Ravenouschaos]

Hello. I have a Sprint Evo 4G that is fully flashed to Cricket. Everything works great, but I keep getting error 67/131 when I toggle mobile networks or wifi, and during the scheduled times for e-mail syncing. From what I have read this is happening because when the guy flashed my phone he left the authentication on the m.ip tab as simp+mob when it needs to be just simp. Can I use QPST and edit just this setting, since everything works great I don't want to change anything else or do I just have to live with the errors since I don't want to do a full reflash. Thanks for your time!