Helihobby auto rotation unit

Hi, has anyone used the helihobby blue anodised auto rotation unit on a piccolo pro, if so how did you find it. I recently broke the freewheel bell on the main gear and have ordered this part as a replacement along with the CNC machined gear. While i was at it i ordered a metal cp slider and metal hub, for such a small heli (or toy as my girlfriend calls it) your sure can run up the expenses. At least she thinks the parts are toy prices.........lol