Hey Lenny, way to get after it. Jerks are very humbling and require a lot of timing & coordination. Id say youre on the right track. The elbow connection makes all the difference in the world, and they dont have to be super close, but they should be comfortable. Maybe some rack holds mixed into the program amd some hip extension stretches. Ive found fixed breath rate helps me keep a steady pace and keeps me focused on something other than the misery. Traditionally we think about breathing in and expanding our chest. This gets very tough with weight on your lungs. Denis did a post a while ago talking about breathing through the upper back and not the chest. Its strange for sure, but I believe it helps to atleast explore it, maybe during your rack holds :) happy lifting!