Its easy to tell you "who to call" if you post "what is it you need"?
You don't have ski listed.
The site has a parts finder pwcmuscle.com to get new OEM
Or try Nick or Jess aka Minnetonka4me or 99spxxx for anything used first as they contribute to site and parts are fresh water working replacement for anything Seadoo.
You have the classifieds section on main page.
You can make a "wanted parts thread" or browse stuff for sale.
Hope that helps.