Today was the second flight and engine temperatures were improving. I kept the speed to around 130kts and flew for 90 mins. Issues from the first flight were rectified. There are now a few other things to resolve and I'll work with an engineer tomorrow to fix those. The left wing is slightly heavy and the landing gear struts need to be balanced and spaced correctly. Also a lot of right rudder is required in the cruise and the oil pressure needs to be increased.
These are all able to be corrected relatively easily.