Hello Tim,
Sorry - you are going to have to take another look at the Serial number of your canoe. 175793 is assigned to a 17' Otca. I also tried 175798 - but that doesn't fit either.
Look at both stems and compare. The numbers should be the same. Clean the area carefully and maybe try to do a rubbing with paper & crayon.
Post your results back here, we should be able to help.