I was on that stage and Delecour wasn't only one on studs but only one from top with all four with studs. Bouffier had D10 but I think only two with studs and he also had a massive spin in the other stage and that was time he lost to Delecour. Loix had four D10 without studs. Most of late runners had studs as they already knew what is going on when they were leaving service.