Default [Q] i777 modem/RIL questions

Okay, so, I've done a fair amount of reading and searching about modems and RILs, including other forums, but I've still yet to find the specific information I'm looking for. (Most of the stuff that I've found relates to the i9100.) So if I missed the relevant post, I apologize, please direct me there.

That said, here's the deal. I've got an i777, which I have unlocked and am currently using on T-Mobile. I've flashed the stable CM 10.1.3 (Android 4.2.2). Its baseband is UCLE5. It's running well. I have few complaints, except for occasional low signal.

I've already seen this thread, with the different modems available: http://forum.xda-developers.com/show....php?t=1336958

I lost the link, but I also found a thread, possibly on another forum, where a T-Mobile user reported better performance with baseband UCMD8. I'd like to try it. I think I can manage flashing it on my own via CWM.

However, I've read in a bunch of places that it's also important to have a RIL matching the baseband version. I found a thread that gives a terminal emulator command to find your current RIL version (getprop "gsm.version.ril-impl"), and mine is "Samsung RIL(IPC) v2.0", which is apparently from Gingerbread.

So, my question is this: Should I also change my RIL? If so, 1) where would I get the appropriate RIL for the i777 with CM10.1.3, and 2) how would I install it, preferably without performing another wipe, reset and ROM installation?

Thanks in advance for your help!