This is not Good

[Lee Estingoy]

If you have a V2 Monster I'd really suggest that you DON'T lengthen the wires on the switch. This may cause some serious damage to the BEC chip.

Have you just checked to see if indeed there is a short between the barrel and the heatsink? Very easy to do with a voltmeter, a battery, basic stuff that you should have laying around. Much easier to check than to speculate on a forum like this....

Lee