Don't know whether M & P can identify the Staffel but the unit targeting Asch ( 366 and 352 FGs) was JG11 ( I. and III. Gruppen had FW190As and the 109Gs and Ks were in II. Gruppe). They were G-14s and K-4s. Known II.Gruppe losses were Fhr. Hoffmann ( II.Gruppe) Me109K-4 331510, Fhr. Huss ( 6./St.) Me109K-4 330474 Black 3 and Fw. Reschke ( 6./St.) Me109G-14 785119 Black 5 ( that's assuming JG11 hadn't increased their Gruppen to 4 Staffeln in 1944 which would then include 5. 6. 7. and 8. Staffeln).
I reckon JG11 only had 3 per Gruppe as 10./JG11 had FW190 Jabos and 11./JG11 had Me109Ts. JG11's RDV marking was a 900mm wide yellow fuselage band usually with a white spiral on the spinner.
These are Whisner's claims list.............
http://www.cieldegloire.com/014_whisner_w_t.php
Nick