I DO NOT recommend cutting the tip of the audio plug. First attempt disabled my connection to the GPS.
I thought my cut was a little too close to 2nd plastic band that seperates each division of the plug so I decided to give it another try this time cutting the very tip with no effect (still had no audio) but I was able to receive data from the GPS. So instead of cutting off another huge chunk I decide to start grinding little by litte, no change in fact when I got down to about 1mm from the 2nd ring I lost GPS again
Considering I only paid $5 for the remotes I'm at no loss, but people who order custom cables I wouldn't recommend it. Hopefully I can find another used remote in the morning before I leave on my trip.
Anyone who has been successful at the modification can you please post some detailed pictures of your work?