I don't understand how you are cheating the RAC? Did you notice you also got validated tasks with big credit numbers that accumulated to the end RAC.
I bet if I run my experiment on them my calculations just turn out fine to the numbers you see. In fact. I will do it tomorrow and make a post about it.
Are those 124 tasks all tasks since you began?
As promised: https://steemit.com/gridcoin/@jefpatat/debunking-rac-fud