Does anyone know what the shaft tip size is for the U500's? Is it still .355, or did they switch to .370. My 2 iron is coming Tuesday with the Hzrdus Smoke Black 90HY shaft in it. Was going to pull it and put my X100 shaft from my 718 T-MB in it, which is a .355. Wanted to make sure it'd fit before I started pulling shafts.