Thanks for the link (I love this site). Which restricters did you get?
I decided to use adjustable restrictors so I can adjust the angle speed to suit. I do not want the plow to angle too rapidly, as it would using the Bobcat hydraulics w/o restrictors, even at idle speed. These are the restrictors I decided on:
https://www.surpluscenter.com/item.asp?item=9-5300-50&catname=hydraulic
I decided to reverse the restrictors from the position shown. Instead of restricting on the return, I think restricting on the supply with free flow on the return might be a better choice. There was no absolute need to use 1/2" restrictors for the plow but I am plumbing it all up for things other than just the Fisher plow and I want to have maximum flexibility. I decided to eliminate the cross-over relief valve due to frogfarmer's (and others) recommendations. I have not been able to determine the actual maximum recommended working pressure of the Fisher angle cylinders but judging from knock-off replacements, 2500 psig seems likely. The Bobcat's hydraulics relieve at 3500 psig, measured at the external hydraulics quick couplers. Since such a spike in pressure would normally occur only at the end of stroke of the angling cylinders, I'm counting on that amount of overpressure for very short periods to not be a problem. If anyone has any comments on that, please advise. I did find out that some fittings used by Fisher are brass that are rated for 1200 psig maximum working pressure. I'm not willing to stretch that to 3500 psig, even for short periods. It's easy enough to simply replace three 1/4" brass street elbows with high pressure steel hydraulic fittings.
I'm also planning on attaching the plow to the Bobcat using Bobcat's 3pt hitch adapter plate. The spread of the plow's A-frame is just right for meeting the Cat 1 hitch spread dimension. I am planning on using a chain top link, thereby permitting the plow to float about the hitch pins. I definitely want the plow to float like that. I do not like the idea of attaching the plow using the standard, rigid Bobcat quick-attach plate. That would only permit float via the Bobcat's main lift cylinders. That type of float probably does not work well for forward motion. It's intended for back-dragging. I suspect using it going forward would result in much digging in of the plow unless the ground is completely frozen. No pavement here.