Huge Problems Since Sammy 4.3

Hello. About three days ago, I decided to move to Sammy 4.3 from AOSP 4.3. I've had huge problems since then. I flashed the MJ5 bootloader, ARHD 20.0 and Devil kernel. The problem occurs on SpeedWizz and 20.1 as well.

My recovery partition gets corrupt. Recovery boots straight to a kind of download mode with no text/counters. I have to flash recovery from Odin in order to fix it. Sometimes it won't even work without a PIT file. Sometimes, I have to flash multiple times and it goes to the Firmware Update Failed, Try recovery mode in Odin screen. Sometimes, it says failed but works anyway. And it just gets corrupt after a small delay every time.

Any way to fix this? I'm going crazy without my recovery.

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Thanks guys it was NAND corruption, apparently. I updated to the latest British ROM, and it's been fine after that.

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My warranty is almost over anyway, so.

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