Wow, this thread still alive. Sorry that I abandoned the thread.
Solution was expensive.
1) I replaced ALL fittings with Aeroquip. That solved fitting leaks, but at $35 x 4 plus work to take all apart and put back together.
2) Mocal core burst. I called Z1 and they informed me that Mocal is not good for Z because of spike in oil pressure on 370 cars at start up. They no longer offering Mocal core with that kit.
3) I ordered Setrab 19 row core and sent back Mocal core to Z1 for warranty refund. Incremental cost(net of refund) was about $100
New installation costs....don't want to talk about it
All work was done by very high end shops catering to track day crowd-I am not familiar with fittings/fluid lines to tackle it myself.
At the end all is working and no leaks.
I appreciate help from Z1, but they really need to look into what brand/quality fittings are used on their hoses.
tip: you have to use "shorty" oil filter with this kit, unless you have very tiny and burn proof hands and a LOT of patience
