Have you looked at
http://www.ghostbombers.com/kf4/KG%2051/262feb-mar.html ?
CX/MSS/R. 450(C)
6. Strength return stamped 1945/2/2:
Taking over GK 111605, W.Nr. not previously reported.
CX/MSS/R 490 (C)
8. To KABUS ((I./KG)) 15* Hopsten-Rheine, from ((I./KG)) 15* Rear Detachment, Giebelstadt, stamped 0815/11/3:-
Report herewith:
GH, HH, (smudge)K, KK, BL, change of jet proplsion unit port and starboard.
(B% BB) 170284, PH, OL serviceable.
WL, Works No. 110914 left for Neuburg on 9/3.
OL, L and GK: Works No. 110620 will probably take-off on 10/3** for Neuburg.
A/c allocated to (Roman) II. Gruppe will be ferried over by pilots of (Roman) I. Gruppe who have become free.
Pilots available for all a/c.
NOTES: * Almost certainly error for (Roman)I./KG 51. ** as written.
21. Signed Unrau Major and Kommandeur, addressed to Hptm. Rossberg, on 7/3:-
Hptm. Rossberg is to go at once to Giebelstadt and is to fly from there with Works No. 500070* to Neuburg. He is to issue orders for the ferrying of Works Nos. 111634 and 110(blot)4 also to Neuburg. The crews thus released are to return by train to Esch after carrying-out the ferrying. The technical personnel of KEDAC ((3./KG)) in Giebelstadt are to transfer immediately afterwards to Rhein-Main.
NOTES: 1) Source saw this in file of Battle Unit Kowalewski. 2) * A/c of this works number belonged to 3./KG 51 on 20/2 (MSS/T 469/50).