First: the rope (yellow) running along the front cross beam is my addition as a barber hauler to outhaul the jib when sailing downwind. You don't have to have it unless you want to race - then it's a must. Later models had a barberhauler that ran inside the main beam - made for a very clean installation. There are a variety of ways to run that line and in this case it was two individual lines each running to opposite sides of the boat through their own cleat. When sailing downwind, this adjustment lets you pull the clew of the jib out to the edge of the boat for proper shape in conjunction with the mainsail.

The line in the back is a continuous line going though two v-jam cleats with rollers and to each jib block. Previously the jib block position was dictated by a fixed line that was tied at the back eye where the cable terminates and at the jib block. I wanted the ability to change this on the fly so I installed this system. It allowed me to move the jib cars forward and aft. It worked very well.

I'm surprised the guy at the factory told you about the rivet idea...it probably works fine but it scared me to much to do it myself when someone told me that. I quickly got used to the bar and, believe it or not, actually missed having it when I got my 6.0. While it can be a bit rough on the knees at first, it comes in handy when you get hit with a puff and slip or loose your grip on the windward hull.