I have 2x Huisun v1. One of them doesn't want to pan and tilt all the way. I can get some panning but it won't go the whole distance. The numbers showing the degree of panning and tilting continue for a little while longer but then stops also before getting to limits. I've tried to reverse the camera on the mount thinking I may have mounted it wrong but there was no difference. It doesn't work in BI or through web page. I think the motor is dying. Any ideas?