This frame is like a tank, except some extraneous holes in the top plate. I almost like the look and durability of the pod over the original carbon fiber top plate that came with it.
The GoPro sled is at 30 degrees and is meant to attach to the carbon fiber top plate. I use aluminum washers and cup head bolts to attach.
Non-affiliate Amazon link: https://www.amazon.com/gp/product/B0758K3LBY/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
They also sell replacement arms in sets of 2 but they are out of stock at the moment.
Not needed, buuuut..... Hit the pods with a heat gun for a bit and you'll actually be able to see the layers kind of disappear depending on your layer height. The TPU will also become strongly bonded and extraordinarily resistant to impact once installed as well. Also has the effect of making the print crazy shiny.
You can and WILL melt or make a print unuseable if you overdo this part.
Practice on a decent sized print that won't hurt your feelings if you destroy it first to see the effects of the heat gun.