Prior to the super decathlon I had the chance to fly the Cap 10 and I remember that I was actually stickin the aerobatic straps on the legs with the harness, this is why I did purchase my parachutes with the aerobatic straps, those of the cap 10 were really uncomfortable.
I actually have dual ratchet harness as well and very comfortable. A couple of months ago I flew with national parachutes, normal straps and dual ratchet harness and I have to say that I did have problems sticking the straps on the legs, still, this may depend also on the pilot body I guess, shorter, taller, bigger, thinner.....back cushion in / out......
By the way, I did order them in the US rather than in europe, at that time, way way way cheaper than here.....
Best regards,
Miguel