www.wileyski.com or (206) 762-1300 ask for Darren, tell him what you put in your post and he will get you dialed easy for 4-500.00 bucks. He knows his stuff and they offer great service.
Guaranteed a 35 year old ski is way behind todays technology. I once road a Connelly Comp II that I loved, stepped on a redline classic and thought I had died and gone to heaven, I now ride a CR7, it's a rocket for me and I know there is stuff out there that out performs the CR7 hands down.
Good Luck,
JT