Got a few more flights in, no issues this time and my new UP6 valve worked great.
Feeling more confident in the jet so opened her up a bit, I'm still noes heavy as inverted she drops the noes and needs a little forward stick to fly level so I will move the flight packs back one at a time. Fuel consumption is good as after a 6min flight I have half a tank left after shut down. So I'm flying with a bit of fuel forward of the CG too.
Here is a video from earlier today.
https://youtu.be/mhh7yoaTaVw
TB