Pleeeease... read a bit in the linked thread. It depends on the stringer and his machine if he needs to add 1 or 2 lbs. on the crosses to maintain the correct shape of your racket. So you just tell your stringer, that you want 24 lbs. tension and he will know what to do. That's why it's important to have a stringer who you can trust and who delivers consistent stringjobs. If you switch stringers you will notice that 24 lbs. from one stringer will feel different than 24 lbs. from someone else.