I use the 3 point to lift a bushog during mowing season. It did foam mildly a couple of times before I added the adapter block, but only after hard use and working on a hill side. It is a stock 550 unit around '61 vintage. I have 1/2&quot; id hoses in and out of the valve. I tow a trailer, and run the bushog in the summer and want to plow snow in the winter if I can get this plow thing working properly. My phone is 607-377-2609 8am-9pm eastern time. A call would be welcome. Thanks, Mike