I finally realized where the problem lies. My original theory was that the trim ring's tabs (clips) were providing so much tension against the inside of the rim/wheel, that I was not applying enough pressure to push the trim ring downward. So I decided to build a jig out of mdf that would squeeze the ring all the way on. But my theory was wrong. No matter how much pressure you apply, the trim ring will not contact the rim's bead/edge. The inner perimeter of the ring is simply too large to sit all the way down. It will not clear the inner ridge of the rim. I have attached a picture with arrows pointing to that area of contact. So yes, if you use factory 14" inch trim rings you will have to live with the 1/4' gap. Even with the gap, I love the look of the brushed finish against the repro Specialty Road Wheel.