Yes, I have had some bad experience with Jeg/summit brand fittings. I see XRP & Fragola have a nice catalog on line, the Earls is not very well laid out.

I have decided to use weld on bungs on the motorplate and go with a -20 return after talking with my radiator builder. And -16 for the 2 block feeds from the Meziere pump as it is already -16 ORB outlets. I really didn't want to sacrifice any flow capability with the spallish -10 & -12 thread size my motorplate came with