The forward tunnel cover needs to be modified to work with the control approach rudder pedals. This pedal system has a pair of arms that extend down into the tunnel, where they attach to the rudder cables.
In order to accomidate this, I chose to both cut two slots to fit the arms and also split the tunnel cover to make installation possible without removing the rudder cables.
It was pretty straight forward. I just needed to put the tunnel cover in place, and see where the arms fell. I then removed the tunnel cover an drew out the cut lines, then cut the slots out with a dremel.
Once the cover was cut, I reinstalled the cover and made sure that the rudder pedals cleared, and added a tab to secure the two parts of the tunnel cover.