OK I miss understood.
TMO has all the real torpedo problems of the early war modeled so in 42 things just don't work all that good. We fought for one and a half years with faulty torpedoes.
The Influence setting is so bad, just like real life, I never even try it.
Contact isn't much better, lots of duds if you use high speed and shoot too close to a 90° track.
I've gotten to the point I just turn off duds. After three years I've had all the thrill of the real life problems so I don't need them anymore.
Things get better in 43.
Congrats on the sinking.
Magic