Ive never overheated except when my water pump seal went out,so that doesnt count.And Ive ridden deep snow,deep mud,tight woods and technical hill climbs, also have ridden 119 degree heat. I run water wetter but I also have aluminum radiator guards that dont help cooling (but keep the tree limbs out).Try a new cap,make sure the hoses arent kinked,fins in the radiator arent all bent down,run water and water wetter,and make sure the pump works.