Recently the Becks Vier has been pouring with a ridiculously large amount of head. We run the Becks off of CO2 and the other two lagers, Stella and Staropramen, off a 60/40 mix. Is it worth trying the Becks with 60/40 or is there another solution?
Firstly, provided your beer line is clean, the keg of Becks is being sold within at most a week, all cooling systems and gas pressures are correct, then you should not have a problem. The gas of choice for lagers is always CO2. Mixed gas 60/40 can be used with good results. Because of the reduced amount of CO2 in the mixed gas it can in some circumstances prevent fobbing. So if all dispense factors are within spec then maybe you should try mixed gas.