I recently installed new kitchen cabinets, and of course I have to re-install my OTR microwave. I'm not crazy about drilling holes in the above cabinet, and if down the road I have to replace the microwave surely the new template will not match the old, and now we have more new holes! Is it possible to mount 4 90deg. brackets to the cabinets on either side to support the oven? I would think that it would be universal to suit other microwaves being that the widths are all the same.And certainly a small screw is better than boring a 1/4" hole in the above cabinet. Any other ideas would be appreciated.

Thanks,
Mike O