Local hydraulic shops in my area can't help me because they are stainless. Who can I call?

Steve

I dont think you will find that too easily. May be easier to just get direct replacements from Mercury.

Just use Aeroquip fittings and line. You can make anything you need.

I got my oil lines of my 502 that I'm not using because I changed my remote filter location. Let me know if you could use them.

Marine Power 502, not merc, I was hoping to get from non dealer source

Are they NPT threads?

No they are not. Inverted flare I think.

Use the pushlock hose with the barbed end fittings. You just cut the length you need and push the hose over the barbed end. XRP hose and fittings are nice they even have clamps you can use for added security.

Do a google on Parker Hose/Hydraullics. They may have what you need.

This is who made mine. Make sure to get new fittings also, if you are experiencing a leak.

http://www.clinehose.com/about.html