I do not think it's twisted. If the bolts were loose the weight of the arch would close the gap at the front, and open up the joint at the rear of the arch. You do not appear to have a gap at the rear. The joint in the area of the clamp bolts looks okay, no gaps and 80 - 90% looks a straight joint. The only gap is at the front, fibre glass does not shrink ( as far as I know ) which is the only way to open up the front. It looks like a slight bow at the end of the fibre glass moulding, could be hull or arch. This area carries no load, and could even have been built in to ensure that you get a good flat contact in the bolt area. Looks like it needs re-sealing, but I would still ask Sealine or the dealer, after all they are the only ones that can say yes or no, no one on the forum can sort it.
Brian
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