RE: in need of some bits...
My plan is two model two tanks for a historical encounter in the Leningrad region, Aug '41. One will be a KV-1e no. 864 commanded by Zinoviy Kolobanov, whose tank destroyed 23 panzers in this engagement outside Krasnogvardeisk. The panzers were from the Army Group North, 8 panzer division. The info I've studied said the unit Kolobanov engaged was primarily Pz II's and III's. It's not clear any Ausf H's were involved, but realistically that would have been the only model with the chance of taking out a KV-1
The tauchpanzer III's were used (exclusively?) by the 18th panzer division, Army Group Center, that were available in the initial Barbarossa invasion. They were used in submersible mode to cross the Bug River in Poland. The 8th Pz Division advanced thru Bryansk and ultimately south of Moscow to Tula.
So it doesn't appear any Tauchpanzers could have possibly been involved in Kolobanov's engagement. For now anyway, that's my logic for converting the HL Tauchpanzer III to a standard Pz III H.
Frank