old school thinking
from a modern point of view, look at how mtb's are setup these days. angles have got slacker, with the riders weight further back.
the only exceptions are full blown XC race bikes.
the difference was, in our retro days, most bikes were setup the same kind of way, because xc riding was all we had.
when sus. forks became cheaper, i remember upgrading loadsa old school bikes, but fitting shorter stems AND riser bars to compensate. that was in the mid 90's, with the advent of DH, we were learing more about how MTB's ride, & that has influenced how modern bikes are setup today.
so...the orange has a slack head angle due to the fork upgrade..which modern DH bikes are designed with, to place rider weight further back for better control. this then makes the steering slow, so fitting a shorter stem speeds it up.
i know the orange is not a DH bike! but you can solve the problem with a similar solution.
89' Ridgeback 602lx/603
91' Muddy Fox Alu Pro
87' Muddy Fox Courier
86' Muddy Fox Courier
85' Porsche 924!
On the Kona hunt ..