because when the kit was assembled the builder had to give raa a mtow of his own choosing so they used to all put down 544 which was the maximum raa weight at the time.
now raa have decided to go through every aircraft with a fine tooth comb when a condition report comes in and they realised the xair mtow was 450kg overseas and thats what they tried on me until i said no , just cancel the rego instead.
next day the tech boss rings me and says what can we do to make you happy. i said 450 was too low it makes my dual control aircraft a single seater . make it 490kg like it shows on the xair aus website. he agreed and that was that.
jarred said they were only doing it to make flying safer not to annoy anyone. i agree , i think it would have been too heavy at 544, a hell of a lot of strain on the wing in turbulence.