Switching my JD 7200 planter to independent markers. Tried it on SCV #2 & #3 same problem... They are very slow going down but come up very quickly. No matter how much I increase the flow it doesn't help. The tractor is a JD 8220.

SCV#1 planter lift
SCV#2 nothing
SCV#3 marker
SCV#4 vacuum

Followed what JD's website said.
http://jdpc.deere.com/jdpc/servlet/com.deere.u90490.partscatalog.view.servlets.PrintPageServlet?printParams=Illustration,+Keylines


Thanks for any advice!