weaving tine drill question

[Neddy flanders]

how much air should be coming out of coulters when fan is flat out 1000rpm. with an accord/JD 750 fan the air blast absolutely throws wheat or even beans out with gusto. Weaving doesn't, on end coulters, beans or peas seem to just dribble out. never had a problem, but wonder if that's normal

thanks

 

[jack6480]

Is it hydraulic driven? With an electric box?