I noticed same problem w/ alignment. My RX had < 50 miles when I bought it. Dealer said nothing wrong, alignment within specs. But it continues to drift to the right. I've taken it back 4 times (car now has 600 miles). This last time, Dealer rotated front tires to the rear with no accompanying 4-wheel alignment and feel some small improvement. It still needs work. I may have a lemon.
This problem makes driving the RX350 awful! It makes the driving feel like work. I'm taking it back again!