Cocre
Gold Member
One of these (or something similar) inline will solve your problem. I used one each on my TnT and you can dial in whatever flow (and flow equals speed) you need.
https://www.surpluscenter.com/item.asp?item=9-5302-38&catname=hydraulic
https://www.surpluscenter.com/item.asp?item=9-5302-38&catname=hydraulic