I have some rectangle mirrors for my bikes, but the clamps are pure garbage. they keep coming loose all the time. I was pondering drilling holes in the bars and mounting them direct, but afraid of making them weaker. then i see that chucklehead with the $2,000 bike has the bars just like i was thinking about doing. So here is my dilema....should i just drill and mount, call it a day, or drill a little oversized and find some tubing and weld it in for strength, or is that overkill?