Hi, Ive been researching the 222 quite a biy as i am adding detail to a 1/6 Armortek model.
There are not that many clear period pix of wartime 222 from this ange and not that many that clearly show the tops of the screens.
The nearest i have found is on Jaque Littlefield's restored 222, and in this case the d sdhaped pieces look to be finer and are attached on both sides of the screen.
Having said that, i am always very wary of features on restored AFVs.
Please take a look at the excellent Panzer Tracts series, and in this case, the Leichter PanzerSpaehwagen book which covers all the series from 221 through to 261.
This book does not mention these d shaped parts on the screens at all.
I certainly think that at present they are too coarse and dont look right.
Cheers
Tim