Like mike said, I use a dab of clear liquid nails on the ties and it stays flexible enough to hold it in place while still functioning properly.
Overall we have had good experiences with Atlas code 55 turnouts. The point rails popping off has happened on a few of them and we've had the nickel plating wear off in a few places where we lightly sanded (1200 grit) to remove off the tops of the rails. Otherwise they work fine and everything we have (which are running low profile metal wheel sets (usually Fox Valley) runs through them without a snag or problem (unless sloppy ballast or a twisted/torqued installation screws it up).
Bill Denton has Peco turnouts on his modules and other than having to shim some of them, I believe the have been relatively free of problems. Occasionally a turnout will get picked and derail something but some minor adjustments usually clears the problem.
We are going to need close to 80 turnouts for our yard modules and have decided to hand lay them. We'll see how that goes (other than slow!). 
- Jamie
Jamie,
Which version of Liquid Nails is the clear one?
Erik
