I will second everything that Max has stated. When you ski with improper alignment you are already compensating and developing bad habits. I just had a nice breakthrough in my skiing. Much of it came from working on my counteracting and my counterbalance in my skiing. But I also, after looking at video, added some more canting to my right boot. The difference was huge and it has helped change my skiing especially on that side. One of my chronic bad moves went away almost immediately with the additional canting. The point is that skiers often make movements that are not beneficial because they are compensating for the poor alignment.
Go see Glen and get it done properly and do it soon. It will change your skiing and you will know you are on the right path. This is worth a lot in my opinion (certainly a lot more than he will charge!).