Years ago a Bobcat dealer here made their own buckets and angle snow blades. Their blades used a single cylinder. They said the blade should be angled all the way against the stops to avoid damaging the cylinder. The cushion/lock valve on your blade is to keep the plow in the position it's adjusted. It shouldn't matter how much flow because you don't normally adjust it a lot in general snow clearing. Might be better to put the flow restrictors before the cushion/lock valve. I'd still be careful pushing in unfamiliar area's or where there could be hidden obstacles by having the blade fully angled. Twin cylinder angling is a heavier duty design but single is fine if the operator is careful and doesn't just go full speed ahead all the time. It's good to check out the area's you're going to clear before the snow comes. Then you can make note of obstacles.