TT virtual museum says "You always put the PS on the left side of a 540/544...". Searching the archives of this list and the company site regarding placement for Omni A/D/C, nothing found. I had never thought much about it, usually placed mine on the right of the Triton/Omni D/Omni C, never noticed any issues. Is there a correct placement? 73, Curt KB5JO