I guess this is what I get buying from ebay and trusting seller's description and then getting sidetracked and not doing good testing for a few weeks after receiving the lens.. anyways learning experience aside should I send this lens to canon and pay for it to be calibrated? Here's a classic example of what the softness looks like, though if you need more examples I can provide them... the right side of the image will be very sharp, but it fades to a blurry mess on the left side of the image more then one would expect for a lens this price. I don't mind sucking it up and sending it in, just curious to get some thoughts.
here's a few examples.. I don't have the RAWS for these but these JPGS are plenty high quality to show it.
The road picture shows it is possible to get sharp pictures from the left side, usually on the foreground is when I can get it sharp but then the foreground on the right side will be soft.. perhaps lens decentering?