Funny, my fan plug broke off just trying to pull the fan off. Whatever, I was planning on running it off the the rx anyway.
Instead of modding the case, I made a case mount that solved a couple of problems I had with my V1s. It now has a quick change fan on top using a 25mm Muchmore Racing fan that I've had good luck with on my MMs. Second, it keeps the case from popping apart. And third (just in case), it's a fire shield for my lipos!

(just kidding Patrick!)
I was rushing when I made it and broke my 3mm tap on the last hole, so instead of a nice countersunk screw, it's a dowel pin.