I have an issue with the Artex 345 ELT, it has a fault code which I believe is a miss match between the ELT and G3x NMEA baud settings, just can not figure it out at the moment. I put the centre glove box in position to see how long the intercom leads need to be. I noticed the holes for the headset jacks are too small, they need to be 12mm. They are now drilled to12mm, much easier drilling outside the aircraft. Started to organise the fuel lines, electrical looms and brake lines through the centre section.