reason I ask is because I have very bad knees from chronic injuries and my left leg which is my weaker one wobbles sometimes when I am over tired on that side . I have newer skates and sharper blades . Two things to consider the blade may be not sharped properly for the ice or your weight . The other is you may be like me and have a weaker muscle that needs work on one side , I found using a compression leg sock really helped along with working on my fitness and stance on the ice . If your skates are too tight it ' s usually a sing of weak ankles because aren ' t comfortable supporting yourself on edge well , as you play more your ankles will strengthen and you can play with them looser , fyi looser imo is a lot better since you can controller you blade more .