The rear headrest on your W124 don't lean forward? I have an '87 TD and the rear headrest can be tilited forward. I don't know what is involved in removing the froont headrest. On my '83 TD you just lift and push a small button in the seatback, to release it. With the front headrest in the W124s being powered, I would know how to remove them.
1994 MB E320 Coupe (199,500 mi)
1992 MB 190E 2.6 (173,000 mi)
1983 Porsche 911SC (148,000 mi)
2004 Volvo V70 2.5T (198,000 mi)
President of CT/Westchester Section