I've owned a dual fuel 4x4 for over 400,000k and long distance diagnostics is not my forte.
Agree with the electrics need to be 110% no question about it , with my BIL and son being Auto lects and sharing a factory with
a gas conversion mob. I used to see it all the time, That's why I push for the use of "Y" instead of "T" pieces on the water side of gas.
Could even have an air lock in the converter. again lots of questions need to be asked as its a process of elimination, that gas person
said that 99% of gas problems are electrical