Invest in the proper Boss adaptor.
I did. And still do, although my average PSA lasts less than a year. I had a couple of them replaced (under warranty) but still it's a lot of hassle, and we're not talking about cheap units.
A noticably weak spot is the choke coil (the black block at the end of the cable) that is soldered with very thin wire to the print board, and although there's some glue applied the coil will break when it hits the floor a couple of times. Since this is not unlikely to occur when performing on stage I consider this a construction failure.