zzz-R5 All Access Gymnastics Drillszzz-Videos RO Entry Vaulting Drills | R5 All Access | Gymnastics Training By Jason MacDonald - October 30, 2017 0 5852 FacebookTwitterPinterestWhatsApp R5 AllAccess: Brian Zook from Gym America walks our athletes at High Tech Camp through some drills to help improve the head position, core tightness and arm position in the round off entry vault (Yurchenko).