I was about to start tweaking the topology and see if it fix it and i saw that the other piece below it has the same shape & much cleaner topology so i unwraped it quickly to test and yes you both are right its way way better & almost no distortion so now am going to apply that to the original shape , thanks .
Wow,that many responses.Thanks guys! I thought I'm a pretty good modeler but.... :/ seems one can learn his whole life :) I've tried the slice method,kind of,because I forgot about the modifier and tried to do it with some circles and then delete from the intersection the part that wasn't needed but it ended up messy…