EVO does not charge, completely revert back?

[tripflex]

Hey guys so my EVO has been my daily driver since the day it came out, haven't had any problems and been loving it since.

Recently i purchased an extended battery to hopefully increase the amount of time i have to leave the phone charging. When i switched to the new battery i didn't notice much difference, even conditioned the battery perfectly as well.

So my next step i installed a SBC kernel to see if that may help, well the only thing i can think is that i got lazy and somehow left my phone on with the SBC kernel and now it has messed up the phone.

PROBLEM:
Phone will not accept charge via USB, OEM or Aftermarket charger. The only way for me to use my phone is to charge a battery with an external charger and then just keep switching them out.

So i believe this may be caused by using the SBC kernel but can't be sure (the phone is a bit old and beat up), but i want to revert everything back to stock so i can take it to the Sprint store and see if they will just swap me with another EVO so i don't have any phone downtime. I know worst case scenario i can order another one through insurance but i don't want to spend the $100 deductible if i don't have to.

What is the best way to revert completely back to stock and hopefully make it so at the Sprint store they can't tell that i used a custom rom and kernel?

I created a NAND backup of my current install and was just going to remove the sd card when i go to the Sprint store so i can at least have a backup.

I found these stock roms:
http://forum.ppcgeeks.com/cdma-htc-e...pped-roms.html

But can't seem to find any stock kernels except this thread on XDA:
Stock Kernel - xda-developers

Anybody know where i can download the stock kernel?

I also found this thread on XDA with document from a Sprint forum saying that they will accept rooted phones?:
xda-developers - View Single Post - Sprint returns

So my question really comes down to, should i just worry about flashing the stock kernel and rom and then just bring it to a Sprint store?

Anybody got any feedback that has done this before or can point me in the right direction? I want to try and stop by the store today to see what we can get done, have a big week of work ahead of me and don't need any phone downtime.

Thanks guys!