I have an 95 C-dale m300le that I am freshening up after using up all the life in its previous Shimano HG chain - kinked to the point that no amount cleaning or lubricant would relieve the problem. With about 4-5k miles on it, I decided to do an entire drivetrain refresh. Original bottom bracket also turned out to be shot. Decided on Sugino cranks, SRAM chain & 12-32 cassette. Got new Conti tires and tubes as well.
Bought a replacement freehub too, because it had locked up a few months ago (did not allow coasting), but relubricating had fixed that. The replacement freehub is a Shimano STX-RC / Acera-X. The replacement of all the other parts was straightforward and uneventful. But the freehub seems to be permanently cinched onto the wheelhub's spline pattern with a hollow 10mm hex-key-operated bolt. Because I couldn't get it to loosen with a regular hex key in a holder or a hex in a big pair of slip-jaw pliers, I tried with a hex key socket on a torque wrench. 100+ ft-lb has not broken the fastener loose, but the rim is deflecting as I'm struggling to hold it in place. I tried WD-40 and Liquid Wrench without any luck. I'm afraid if I put much more force into I'm going to harm the wheel.
I put everything back together and it rode very nicely, but I have to wonder, am I stuck with the old freehub on my wheel, or is there some technique or trick I'm missing?