Not having ridden in a couple months, then a couple brain farts, patience and zwoom, perfect !

What's been wrong all tis time ?

Corrosion,
A bent needle,
Partially blocked NEW main jet,
Worms in the overflow,
Mud dobbers in the tank vent,
And one oring in the slide preventing smooth movement.

so now it runs like snot, and there's an f4I for sale near by...

Wahoo !

Just slap that puppy with JBweld and ride ... that is the equivalent of an F4.
Cool.
Buddha.