I started on the 3rd loop with the A5's and I had a small problem. Here is a pic of the two types of compression fittings I have.....



The one pictured first will not work......



For obvious reasons....



Yes, those little SS hex-heads get in the way, so I will go with the old tried and true method with a barb in black.....



or maybe a true silver since all of this will be hidden.....



The block does not seat as well as I would like, so using the barbs will allow me to put more pressure on the block.

Cheers