Float Frame Error

After work today I spent the evening running a stringer along the outside edge of the float frames.
This stringer serves to secure and line up the upper free edges of the frames. The next step will be to start running stringers along the inside of the frames.

However, once I finished running the stringers and marking out the start and stop locations of the raised deck area I realized that I have a problem that needs to be worked out before I can proceed much further. The Full-Sized plans show to cut frames 5 through 11 with the optional angle to produce the flat topped float area between the beams, however this results in a long unsupported area for the stringers.

This probably doesn't make much sense, so maybe some pictures will help to explain.

At this point, I think the fix will require the removal of frames 5 and 11. Once those frames are matched up with the previously removed sections I'll have to mark and cut the frames to remove the raised deck angle and glue those sections back into the frames before re-attaching to the strong-back.

Plans show to use the raised deck option on frames 5-11, this is probably valid if using the method shown in the plans (leaving the foam long on one side and cut back on the other, but with the "half frame" method I'm using, it looks like I should have only cut the raised deck section into frames 6-10.

The "long foam/short foam" method shown in the plans.
I'll need to verify that the start/stop measurements are correct before proceeding.

This picture is looking toward the stern. Frame 5 is shown with the blue tape on top. The beam will eventually stab into a bulkhead located here. If you look just past the frame, you can see a piece of blue tape on the horizontal stringer. This marks the front edge of the raised deck area. With the frames cut the way they are, you can see that I will have nothing to secure the stringer to on Frame 5.