I also use the PVC mod. I have a 2010 233S that had leaking issues. After replacing all the seals and pinch welt, I decided to use the PVC mod to prevent any water from entering the seal.
I used 1 inch angle iron, placing the two ends on the PVC, and ran a line down both sides. This gave me the perfect cutting measurement. Once cut, I glued ends on the pipe and cut slots on the bottom of both ends above the bunk latch. Purchasing material from the hardware store, I made two straps to hold each piece firmly on the gutter.
I also added an extra rain gutter to the side bunk as my trailer did not have one.
Hope this helps.
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