we recent purchased 2 of them. we are currently doing A Midsummer's Night Dream and i have them in a ETC S4 15/30 750w zoom. i have 2 rosco realistic gobos in them in rotating in opposite directions. im having trouble keeping them at the speed i want. i want them as slow as possible so it looks like trees in the wind. but when i set them on the lowest speed possible. ill set them and fly up the pipe and then i turn the rotators off on back on( i have them in a dimmer patched as a nondim) they stopped. and i cantfirgure out why they are doing this.