Dear Doc,
I know a thing or two about M&M and about ship building.
What I observe is you have great skills and a passion for this hobby, both of which are vital attributes.
In regard to canons being too high or ports too low, with the 4 deck Victory, it would only require mm inaccuracy in the lower levels to add up to the amount you are out on the quarter deck.
I too had a problem with canon port mismatch in my Vanguard, which is an easier build than the Victory. What you learn is how to adapt and rectify discrepancy. I tried a number of methods and in the end ground down the canon cart wheels. You have to look closely to see the flattened wheels. When finished, I hope not noticeable.
Now for the hard part. It appears to me your workspace is small for such a large ship and so it would be important to keep it tidy and free of clutter, like your operative field. No scrub nurse to help you here, I’m guessing.
Keep going with this ship, but if you want to start again don’t be discouraged, we all have skeletons in our closet and half finished hulls on our back shelf.
Happy holidays Doc.
View attachment 416244