Got my Spektrum for my 3pk on Tuesday and through it in my car (MTX-3) immediately. Static test: it works fine but will be testing it at the track this weekend.

The instruction do tell you if you have it in PCM or are using the HRS mode, you have to change it over to PPM. I read the instructions before installing. I am curious about the fail-safe feature since I had a fail-safe (from Dynamite) on my car which worked flawlessly.

The Spektrum for the 3pk works on the 3pjs as well as the Hitec CRX and SRX. So, for the guy that has the 3pjs, it should work with your system.

If the system works like advertised, all of my r/c cars that I run will be converted.

In my local area, Mike's Hobby Shop in Carrollton, TX has them in stock (as well as for the JR R-1) for $139.99. You can contact him through his website, www.mikeshobbyshop.com. He does ship worldwide so contact him through his site and tell him I sent you.