Blu, glad you are up and about a bit.
Seems like everyone has had slightly differing experiences with assessors..............me too!
Chap who checked out my Hornet 900 went back and recorded it as a Hornet 600 so I was offered the value of a second hand 600. When I challenged them and they realised their mistake, they had to travel back to the garage to see if the bike WAS a 900.
I'd done a few mods but nothing that affected performance. However, as I had not informed my insurance company of the mods, (renthal bars, mini indicators, rack, crash mushrooms, new seat and so on) I was again only offered the value of a second hand (private sale) Hornet 900.
I was in hospital and so couldn't get to the garage to change the bits back to original.
If I was in the same situation again and I COULD change the bike back to standard, I would do, and sell the mods off privately...or fit them to my new bike.
Good luck.