Rear 3/4 vent window gap

[zambo]

Hoping the brains trust here can supply advice. 
 

The vent seals are all in - second was an unusual struggle given the first took what seems to be considered as reasonable for a first time at 2hrs. 
 

Glass, B pillar frame and seal all seem AOK. 
 

LHS in great - seal to glass seems spot on. RHS and I have this gap at the bottom - not uniform along the horizontal plane. All around it seems about right - it just seems like it’s (the glass) “high” toward the locking bracket (or the seal is “low”). 
 

Four screws holding the B pillar glazing frame in are all good - no adjustment to lower it there.
 

Any ideas or comments welcome. 
 

Thanks Richard

Edited April 1 by zambo