I've seen several posts regarding speed of operation of top links and grapple jaws, that you may want to improve control by using 1/4" hoses, rather than larger. Can you buy a "rheostat" like in-line control that can be adjusted within a range to suit the usage, but keep larger hoses for higher flow applications. Frankly, I'm asking this question because I saw a flow control device in a catalog and it seemed like it might be useful.