If you can do a 2.47 at Spa auto, you'll be able to do a 2.42 manual after half an hour hot lapping.
Honestly, just turn it all off and practise, within an hour you'll wonder why you ever bothered with aids in the first place. They are very restrictive.
C class is the old B class isnt it ??
I'll build a car tonight and set some times, see what I can do.
I do prefer A class though, it's just quicker and in my eyes takes more skill to get the car around the circuit smoother and quicker than in the lower classes, you have more think about - more quickly. Remember I play with assists off.
Did you have a go at my A Class times ??