Bought a 2021 TREK Emonda SLR 7 with Shimano Ultegra Di2 for my 18-year old son who is a development athlete. But I was disappointed by the, practically non-existing, clearance between the right crank arm and the chain that has caused the chipping of the crank arm. When the chain is on the big front disc (52 teeth) and on the lower (heaviest) gear (11 teeth) there's barely any space between the crank and the lower part of the chain (there is a 1mm gap when the bike is on the stand but when my son rides the bike and presses hard on the pedals the gap is zero). The seller says that that's the way the bike was when it was unboxed and suggested to use a washer between crank and frame. But is this right? Has anyone had any similar experience? Because other that this setback the bike is beautiful and powerful. If I made this post in the wrong place please let me know. You can also see a relevant video on YouTube at the link below. Thanks.