Yes Ms Vintage (sorry about that), you are correct, I've never owned a 127 but always lusted after one as kid.
Regarding the advice about retrieving and selling as is.........I would suggest it depends on who your potential buyer is.
A collector type buyer would probably prefer the rifle to be in an unmolested and original condition as possible.....as close to how it left the factory.
However, if the buyer is someone who intends to actually use the rifle rather than just look at it, then a freshly serviced (and upgraded) item may well be more attractive to them.