Hi Paul and thank you for the detail info.

I was told by one of my rc jet pilot friend about the restrictions of the filter, it was removed, it is back on now, the UAT sack was replaced about two years ago

My next move will be to disconnect the fuel tube from the engine to check the fuel flow pressure, I will also concentrate on the pump wire lead connection to the FEDEC, that connection may be loose and moving causing the pump to just turn off as the GSU display shows no pump PW at all during the flame out.