There is no need for gapping on the ME turnout.
The Wiring for DCC web site has an excellent discussion on the ME turnout. It is worth a read.
http://www.wiringfordcc.com/switches_ME_BK.htm
Rich
Alton Junction
In the past I've aways put electrical feeders on the points end of a turnout and insulating railjoiners on the frog end of a turnout. I'm going to use Micro Engineering #6 turnouts with dead frogs for a crossover. Do I need to gap the rails connecting the two turnouts? I suspect not, but thought I would double check before gluing this thing down and then having to cut gaps the hard way.