Mmm..
be very carefull with that Sensors m8
from what I've hear 1 change can screw up the behaviour of the AI totally
its adviced not to touch them unless you have a lot of experience with it,
if you run silent Rig
did you set your speed to 2 knots?
as 3 knots will make enough noise for the Escorts to hear you via the hydro's
also what kind of DD was it?
there is a online manual in a thread by ducimus about the AI behaviour in GWX
maybe its worth the read:
http://www.subsim.com/radioroom/showthread.php?t=104377
still, weird thought I run GWX myself and have had a lot of Escorts chasing my butt but they werent that hard.
as such I even got myself pinged down in the channel of england and lived to tell the the story that I made it out Unscratched
30 meters water, in the middle of a Minefield , 5 escorts above my head in 1940