Well, been about 10 days since I steam cleaned the engine during the first flight, due to work just managed to pull the engine apart, bit of fun for a novice, must say I was a bit apprehensive but now am wishing I had built it from scratch initially. for the life of me I cannot see anything obvious as being a problem so just going to get some o'rings and reassemble as per the manual.
Now the whole problem was caused by the idiot operating it, I was so preoccupied trying to get oil cooling under control I had forgotten that I had the wrong coolant inlet hose on, I had done this on purpose during construction as it enables purging the air from the system without the multiple heat cycles saving time. the needed reinforced hose was still on the shelf. so there goes, I admit it. and to think Lynn has made comment about this in his posts recently, I can only kick myself. Nuff said.