Review on PQY Brake Bias Proportioning Valve Pressure Regulator with 1/8NPT Inlet & Outlet - Enhanced Brake Adjustment Features by Mike Wheeler

I pre-purchased this part as I had ordered many other parts and didn't want to fit them right away (so missed the return window). When I installed this it did NOT work straight away. When I tried to bleed the brakes, the brake fluid wouldn't go through the valve. Very poor quality and very disappointing when you are trying to design and build on a budget and buy something that showed a star rating but turned out to be really bad. I'm 60 years old, this is not my first rodeo.