RAM Handlebar Mount 0.75 - 1.0" C (RAM-408-75-1U)

My application is to mount a Trimble GPS (EZ Guide 250) within the cab of a Kubota Tractor... where this device fits my purpose perfectly. The local tractor dealership offered me a mounting bracket costing something of the order of $350, which in my view was insane. The problem I am having however is that the weight of the device which is not excessive, is causing the mount to progressively rotate downwards. I have had three attempts at repositioning and retightening both screws. I have used the piece of adhesive carborundum-type strip supplied with the bracket, but if it continues to drop I will try without the adhesive tape. If all else fails I will refer to Appleseed for advice.

I intially got the wrong size but my local store replaced for the correct size no questions asked. Very good piece of equipment and used for mobile phones and GPS.