At last, I have a new PB (single) : 17.69 sec ! That's a 0,42s improvement over my previous record, which was almost 5 months old.
However, even though my PB doesn't seem to go down, my mo10 constently goes down. I dropped by 2+ seconds since the beggining of 2017. My PB for a mo10 is now 24.52...