My DS1 - 10.6 is going to be assessed for AS shortly following concerns raised by school, the EP and me. I have noted traits for years but have always put them down to his mild DCD and ADD traits as no professional ever raised concerns about ASD. He has several traits, sensory, restricted interests, prefers doing things with adults to other children, self organisation issues, language processing issues , a bit literal and pedantic etc but the one that everyone that I have come across (on line mostly) seems to have is resistance to change in routine/a need to take control of things with meltdowns or major anxiety setting in when things go wrong. DS1 doesnt have this at all ( some minor anxiety when he doesnt get things right at school or panic that he wont be able to do something) but he has never had a meltdown in his life. He likes going to new places and doing new things (although would sometimes not want to stick at something after a while)
I do think there is more going on than just DCD and ADD but has anyone a child with AS that doesnt have any meltdowns and is an easy child to deal with, far easier than DS2 in many ways