Hot damn you're pretty observant. I have had my head above that engine for a couple days looking at how all the parts work and trying different adjustments. But definitely something is off with the mechanisms that are operated by the throttle. I also pondered weather that cross link got bent or was purposely bent initially so that it enables it to pass under the fuel rails without hitting them because it is pretty tight. So I tried turning it sideways and the left side still opens fully and hits the stop long before the right side opens fully. I'm no mechanical engineer so I'm not sure if turning it sideways would make any difference in the "rate" that it opens the left side, but I tried it anyway and no difference. The right side does work and open fully as shown in the second photo but you have to disconnect the cross link. I asked the manufacturer maybe there are different sizes of levers as shown in the third photo, maybe the black lever should be shorter or longer to slow the rate of the left engine side opening so fast.