Just wanted to let you guys know that Perry @ Aeromicro now has a person doing repairs for the MCPX/MSR style boards. My MCPX board had burnt up the FETs for the tail and it was repaired within a day. Cost me $20.
I do believe he will also do brushless upgrades, I do not know if you need to source the parts yourself or if he can do it for you. I would suggest you contact Perry for more information.