If you have very little room to work with shrink tubing inside the connector shell, you can also use teflon plumbers tape as an insulator. Just wrap each joint by repeatedly threading the tape between the junctions and wired and pull the tape tight.
i think what you're describing is simply an overkill. if the solder joints are done properly no bare wire is exposed; therefore, no chance of shorting out Pin 2 and/or 3.
marc
So you also consider shrink tubing overkill?
hi there;
..use of shrink tubing in general? no.
shrink tubing the 3 pins inside the xlr housing? yes, i completely think that's overkill.
marc