i wouldn't worrry about it to much, never used, saw a brake that was perfect , especially of you have the 5in sticking up in the air , check it with the 1in in the air , and just use it where to find a happy medium , my last brake i bought if i bend pc 90 in the center of a 10 ft pc , the ends are over bend ,
the one before that if i bend 90 in center of pc the ends where underbend
portable brakes and light sheet medal is not a perfect science,