John you mentioned that you chnaged to shielded wires. All it takes is a single (missed) strand of the shield (connected to the core) to create a short.
If not already done, remove the connector(s) from the EC2 and check with an ohm meter between each pin on the connector and to ground (for pins that don't go to ground) for shorts (0 ohms).

Just an idea...

Finn

John Slade wrote:

Sorry to say, just a bit too much on my plate  

Ah well. I had to ask.

Let us know how this constant speed prop thing works out.

You never know - I might need one one day....

John