I found the spacer at Daz store, I oder also a longer tube for my reservoir, I find it short a little bit
K - Male-Female G1/4 Coupler, 7mm Spacer Adapter Male-Female G1/4 Coupler [ADT-XMF] - $4.99 : DazMode, Watercooling enthusiasts store
guy ... you need to be patient with WC build, always something missing, I made 4 or 5 orders with Daz and 4 or 5 with Frozen CPU too + 1 order at Ncix