[amsat-bb] satellite metallic cross boom

Hi all, Am down in Peru working on the club station. The antennas are mounted on a metallic cross boom. The antennas are carbon copies of each other in terms of position. I read on the internet that one should be rotated 45 degrees.

Is this an old wives tale? I can fix the problem as one of the antennas will partially down to rehab it.

Thanks, Norm n3ykf