Hi guys!
I was having the same issue than the original poster and I have done what Trevally recommended (downloaded the mod and installed it) but, although mission starts now at 2300 and the script uses TC to get it to 0310 (as expected), when we do the first hydrophone check, official doesn't found anything.
I'm using WoS and have activated the Tutorial's mod via JSGME. I'm using Historical Mission "Four Bearings" for the tutorial, also.
Thanks for your help!