Radio South is at http://www.radiosouthrc.com/ Tony Stillman is the owner and he's the guy you'll be talking to.
As for vibration protection, I've never had a problem with my receivers and this last time was the first problem I've had with a radio period. I've always wrapped my stuff just like you...but recently I was talking with John Benario, the Helicopter columnist for RCM. He happens to be in my club and was looking over my Cap. He strongly suggested that I pitch that stuff and start using the stuff that they ship VCRs, computers and just about any electonics goods in. I can't recall the name of it but it's very thin almost like paper although in reality, it's a type of foam.
I had a large quantity of it and so started using it based on his recommendation and the fact that I noticed that they use it to ship delicate electronics goods in. Besides, I figure if anybody knows vibration, it's a heli guy.