Thanx for the tip. When I bought this trailer 5-6 years ago, I immediately took it to my mechanic (before he retired) and had him do the brakes and put the correct valve and Maxi cans on it. I wanted the spring brakes to hold the trailer because it will be parked on a hill all the time. Hopefully I will never have to do brakes on this again. It sees about 2-300 miles a year. The tires rot long before they wear out.