[Broncazonk]

What are the "knobs" (little domes) projecting forward from the upper surface of the wings (directly above the BK 3.7 cannon underwing racks) on this Ju 87G-1?

I can't find a description/diagram/explanation of those things.

Also, does anyone know the history of this aircraft? (The MG 17s have been removed per the usual practice for a G1, and the landing light has been covered over.)

Thanks!

Bronc

Edit: I just found another photo of a similar, but different knob or dome on a G-1. This one has a flat nose.