This represents the challenge area of BU planes of all types - that is, achieving a square bed. It is really not that unusual for them to be a little out of line. Having said that, it is not your responsibility to sort out the manufacturers issue. Send it back (unless you believe you are capable of doing a perfect job). Regards from Perth Derek
Some tips 1) lower the blade so the first pass is a shallow cut. 2 apply blue tape 3) be sure none of your dado blades/chippers are installed backwards 4) don't cut into your new plywood until you have this figured out.
I saw Festool stuff at woodcraft long before I knew of this forum, or the wood whisperer. I just at that time couldn't justify the cost. Now that I'm building better stuff it's worth it to me. Whether he's sponsored by them or not doesn't change my opinion of their tools. Still premium, still expensive, still the best you're getting at a hobbyist level and most pro level stuff.