Re: Fender Mark Knopfler Red Strat
I don't know of any dispute. I think they just stopped making them for whatever business reason(s) they had. They discontinue signature guitars all the time (Ritchie Sambora, Billy Corgan, Bonnie Raitt).
Plus, MK was only really known for playing a "proper" Fender Strat for the first couple of albums. By the time Making Movies was being recorded he'd moved on to those really cool Schecter "Strats", and that carried over into Love Over Gold as well. Brothers In Arms was recorded with a few different guitars (including the burst from the video), and he got the sig Pensa - which he still uses a lot - during the tour for that album. The solo stuff is a total mixed bag of everything listed so far and more. So really, there isn't such a thing as one guitar that he's particularly known for, unless you want to nail it down to a specific era.