i had this dilemma too. But if you read the protocol, you will see that soreness is not a 'must' on MAX OT. Some times you will not get it, period...
specially on the beginning i had this...but after some weeks (like 4, 5) i started to get sore, specially on chest days, even doing things like just 6 sets.
After you up your intensity, probably soreness will come again...but dont judge your workouts by it (or at least, thats what the protocol says). I myself prefer when i get some soreness (hehehe) but its not always that this happens. Example: Its difficult for me to get my biceps to get sore, but i trained them on monday, and they are sore still today