In my opinion, Völker certainly isn't the problem in reception.
Ziegler and Weihenmaier are really vulnerable...even Geerties now and then...
I agree, Völker has played a lot better than last season IMO. On the other hand Souza was a really solid receiver back in the days when Buijs was Schwerin's coach, also Geerties this season performed below her standards. Weihenmaier has never been and probably will never be a good receiver, but overall, Koslowski throughout the season never managed to solve the reception problems.