My Wise 2086 Pro. tension head is about a year old and I've strung about 400 rackets on since I've got it. A couple of months ago, I was using my Wise 2086 Pro. While I was releasing a pull, the tension head pushed back blowing out the back panel. The top screw mounts blew out. I was able to fix it by using washers. Today when I turned it on, it went through a self test and on the return the tension head hit the back of the panel, and on the panel a blinking "3 ." Has this happen to anyone? I've sent an e-mail to ********** but I don't think I'll get a reply until Monday.