Those long red ones definitely look too short, and 6" total stack is too short as well. if you check my pics, my stack height clears 6.5" easily.
My steerer also has a bolt through it holding it to a crown. It also looks off centre a bit!
Are you running without boots too?
Agreed - the elastomers look non-original, especially the yellow ones. Beyond the initial sag, the Inversions barely move, even under my weight (~190lbs). Hardly surprising, since the elastomers are rock hard, much more so than medium Pace elastomers, for example.
Having done a search on here, I think the previous owner was monsterfatuk, although I bought them on ebay 'BR' (=before Retrobike).
Ran the forks without boots, although I have considered modifying some Lizard Skins neoprene boots to fit. I would probably do that if the forks were going to get used off road, but at the moment I don't have a suitable frame, so may sell them if I can't change the steerer.