We found a pretty large air pocket in the cooling system, that we think was the culprit. When it was built they ran all the hoses for the rear mounted radiator weird. So we did some plumbing, got the air pocket out and hoping for the best.
We are not going to have any time to test drive it until it's time for practice laps. Our schedule at the shop has been slammed and we aren't putting our personal project's over customers.
We were here until 1AM last night working on it and will probably be another late night tonight because the team is leaving in the morning!
Keeping our fingers crossed!