Re: 1998 Peavey wolfgang tremolo too stiff
Yep, assuming that the bridge is moving smoothly through its rotation and not binding at the posts/knife edges, sounds like a spring tension issue. Either too many springs, spring placement (\|/ vs ||| vs ||/, etc) and/or the springs are simply too tight.
Try removing a single spring or, as Devastone said, seek out lighter tension springs.
Also, what size strings are you using?