What are the differences in birdcages from GRT, Mastersbilt, Rocket and so on? I have a mastersbilt with GRT birdcages on it. My bars lineup stratight and the measurements from hole to hole are the same as another racers Mastersbilt cages. I called Mastersbilt and they told me I need to get a set of their birdcages on it. So I'm curious as to what I would benefit from it?
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