I have purchased a Sony HT-CT150 Soundbar to attach under a hanging 32" LCD in a small room. I also purchased the Universal Soundbar-Speaker Brackets to hang the soundbar under the LCD. Has anyone been successful in using these brackets with the CT150? The back of the CT150 has only two of the large holes typically used for a wall mounting. The brackets come supplied with machine screws, washers and nuts. I cannot get the screw to stop turning while I am trying to tighten the nut against the bracket. The hole is not big enough to get your finger in there to hold the head of the screw from turning. Frustrating! Help!