Here is a size 98 push in main jetto fit a Dellorto si type carb.
VESPA PX DELLORTO TYPE PUSH IN SI MAIN JET SIZE 102
VESPA PX DELLORTO TYPE PUSH IN SI MAIN JET SIZE 100
VESPA PX DELLORTO TYPE PUSH IN SI MAIN JET SIZE 140
VESPA PX DELLORTO TYPE PUSH IN SI MAIN JET SIZE 118
VESPA PX DELLORTO TYPE PUSH IN SI MAIN JET SIZE 138
VESPA PX DELLORTO TYPE PUSH IN SI MAIN JET SIZE 96
