<VV> Carter YH choke "blink"

[Doug Mackintosh]

I have read before that the Carter YH accelerator pump delivers a fuel squirt, 
but that this is preceeded by enrichment delivered when the vacuum drop causes 
the choke plate to "blink". I understood that the blink is caused by the vacuum 
unloader briefly letting the choke close partially when the vacuum level drops. 
If I have that straight, can someone explain why there would be a blink even 
after fully warmed up? I would have thought that the unloader was no longer 
affecting the choke position once warmed up.   
 -- Doug Mackintosh
Corsa member since 1996
Corsa/NC member since 1996, Virtual Vairs member
Corvair owner 1969-1971 and 1996-on