Heh Tyeeterror,
Doesn't sound like Alumaweld wants to stand behind the boat. Tell them you want them to upgrade all of the stern to new spects at their cost. If they say no, tell them you are going to call the Coast Guard and see if they have any info on Alumaweld boats and if the they(CG)is going to issue a recal for safety reasons. This should make Alumaweld take notice. I used the same method with a engine manufacturer several years ago, and they changed their tune, when they thought the CG was going to be brought in over safety reasons and the real chance of loss of life from their poor workmanship. Try it it may work. See if they can play hardball, chances are they will strike out.