The new Racors showed up (decided to go w/ the MA's). The fittings show up a week later.
For some reason I assumed my fuel lines were 3/8" but the old barbed fittings are obviously smaller than the new 3/8 Racor barbs.
The "old" Racor fitting I found here go as small as a 5/16 barb but they don't fit the new 500's.
http://www.maesco.com/products/racor/r_access_fit/r_fits/r_fits.html
So do I?
1. Try to stretch the current fuel lines over the 3/8 barb?
2. Replace all the fuel lines w/ 3/8". (They do need to be replaced I just hadn't planned on doing it now) I wonder how critical the hose dimension is for my Cummins B210's?
3. Exchange the fittings for the flat-to-pipe thread adapters and have 90 deg barbs put together locally.
I grow weary...