Is the cooling sorted out?
Hmm I will read the other post later. How far are you from me. I am at 14 and schoenherr.
Did you pull a vacuum and fill it to be sure you are not air locked?
Explain the routing of everything in the cooling system.
Do you have a coolant pressure tester that you could put on it to see how much pressure is in the system ? Also, where is the sensor ay in the system ?
Where is the highest point of the cooling system?