Boss Wing Relief valve Help


Senior Member
northern Wi.
I have a Boss 9'2" V chain lift style, When I push heavy snow the wings fold back much too easy.I can come up to a pile of fresh snow and ease into it give a little throttle and the wings fold right back.I want the wings to stay out when pushing and only fold up when I hit something.
I have screwed up the relief valve and it makes no difference till I get the spring fully compressed then it holds the ball down on the seat so it cannot open.I have tried the local boss plow dealer to get new springs but he can't find them in the book.The spring is about 3/8"dia 3/4" long very heavy wire coil.
My 8'2" Boss is getting soft on the wings too so I need to get 4 springs.
Thank you Hyperpack