Auto-rotate issue with Kitkat ROMs. topic

What's going everyone? I'm having this auto-rotate bug on every Kitkat ROM other than LG Stock KK and I was told that it is the modem but I have no idea where to find a Stock KK modem for when I want to switch back to LG Stock KK. I have a T-Mobile LG G2 and I know where to find the older modem to fix auto-rotate but can't find LG KK modem for T-Mobile.. Anyone that can help would be greatly appreciated.

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