What audio problems?
 

I shot this last weekend. I had the levels cranked down to a notch above off, and the signal in from my Sony wireless was clean and crisp. YouTube - ‪Here, fishy fishy‬‏

I also did some audio recording using the Rode VideoMic Pro. Same results... nice audio.

It's just a coincidence, by the way, that the kid looks and sounds like Ritchie Cunningham on Happy Days.