where can i get pilot jets?

im after a pilot jet for a 17.5mm dellorto. ive checked around the usual sites but they all seem to only have them for 19-21mm carbs?

 

what you need pilot jets for, they dont usually need changing on the 17.5mm carbs :glare:

 

my bike coughs and splutters at low revs and the tone deepens, from what i gather this is the idle mix/pilot jet incorrect?

 

would of thought it would be the mixture screw or needle clip position imho...