Try dropping the needles a notch/raising the needles a notch and dirty/blocked idle jets will give you no progression on to the main jet.
Cost : Little as possible.
Thanks : To those who by their generosity my build has progressed.
Its a handmade sports car not a flaming kit car !!!
If at first you dont succeed,avoid skydiving...
No parachute require to freefall,only if you want to do it twice.