When I needed to bend it(first and second time) I looked around the shop and found a 4 inch, 90 degree PVC elbow. Clamped it to the bench and used the larger collar of the elbow to wrap the bar stock around. Pull it hard from each end to keep the radius of the bend uniform. I match up center-lines on the bar stock and seam on the PVC elbow before bending.

It might be better to clamp the bar and elbow center point together before bending..maybe next time..

Make sure the bar-ends are a uniform length. The ends attach to the rack sides by the bolt-hole-threads already in the rack..naturally..you need to drill holes in the proper place in the bent hoop. Just replace the front-top OEM rack bolt (5mm) with a longer SS bolt..takes about 5 minutes to assemble. I have the bar-ends about 2 inches beyond the hole where the rack attaches. The bar lays along side the rack tubing-rod. I use a very tight zip tie to secure it. It doesn't move..nowhere for it to go.

I'll post a pic..it'll be a few days..traveling right now..