About this 3D model

I have an old Garmin eTrex hand held GPS. I must have got it 10 years ago at least. It's very simple and good for keeping track of distance hiked or biked. Unfortunately I lost the handlebar mount some where in the mists of time. This is a replacement. I tried a couple of designs. It was hard to get the overhanging tabs to work so that the GPS device would snap into place. I used a fillet on the underside so that the overhanging pieces could be built out layer by layer. That seemed to work.