Thanks four your responses, my eldest son is now accoding to "the chart" on the 50 percentile exact!!!!! he is 7 and 22.2kg!!!!!!
Hun it sounds like you just grow some beautiful healthy bubba's... FWIW my 'little' brother is 9 and weighs 40kg, he's not fat he's quite tall for his age and active he (like the rest of my family) just have a big build.. don't forget muscle weighs more than fat
My friends little boy was 11lb at birth and at his 4mth check up he was 8.4kg