Hi Matt,
yes, I did some more testing yesterday, I swapped the valves for some original CAT valves (stole some from one of my other planes ), and then the engine started perfectly. The valves was delivered with the engine by mistake by the distributor (not JetCat's fault), all is well now
Only small problem is that after the 3rd or 4th start, the terminal would display E in the temperature field, signalling some fault with the temperature probe or the cable. It did that consequently after the next 3 runs. I have changed the cable now, and will repeat the tests