About the corvettes: did you check KevinAtlanta's version alone in-game before adding the deck locator? If not, then it might already have had the beeping problem.
If it was something you did, then TOOL would have given an error message when you tried to save it, and the model would become corrupt, causing the beeping.
I've been thinking about an alternative approach to the corvette hulls.
Considering they're identical models, you could just take a model that works, and copy it for all other corvettes, then HEX edit the models to use the right textures.
I realised that I've still got some models with new details, such as gunport hatches and better cannons, which Craiggo sent me a while ago.
This includes the corvette, and the model is fully editable in TOOL. It even had the fourth stern gun locator already in place.
However, the hull itself has reverse lighting, while bizarrely, the rest of the details don't.
What I've done to rectify that is apply blank textures to the hull with new details, while keeping the details visible, and used the normal corvette hull as an extra part using a locator.
I then deleted all the locators on the new hull which already exist on the old hull, because the old ones are set in stone.
However, the fourth stern gun locator still works, even though it's part of the new hull.
This led to ANOTHER problem, because the 'vant' locators needed moving to match the deadeyes that Craiggo added, but I can't replace or remove the ones on the old hull.
So, the idea is, there needs to be an editable corvette hull WITHOUT reverse lighting or beeping, in order to make the more detailed version work.
HP, did you notice whether KA's hull had reverse lighting or not? If it doesn't, we might be able to fix it in TOOL and use it for this new model.
I've put the new model and related textures on the FTP
here, so you can see what I'm on about.