OK, thanks! The best way to go about this is to find two pieces of tubing the same size as the down tubes on your frame. Are both down tubes the same diameter? Cut them a half inch longer than the height of the mount. Then cut each of the lengths in half, lengthwise. Follow the seam inside if there is one. Put those pieces over your frame before you put the mount on, it may be necessary to hug out the mounting backet's foot to get it to fit over the extra width. That bracket looks too small for the frame as it is now. It may also be necessary to straighten the other side a bit and elongate the hole for it to line up.