I have a half inch discrepancy (right leg is shorter) according to a CAT scan I had last year. I knew I always had right knee issues - they came and went in cycling and skiing, but you'd never know it by my gait or spin. You'd be surprised at what you body can adapt to.

Anyway, I bought a box of LeWedges, and started playing around with them in August. I initially started with 5, one to even the foot out, then 4 alternating wedges to make up a quarter inch. It f*cked up my normal feel and just threw off my whole game. I have backed off to just a single wedge under the inside of my right foot and over the winter (spinning 3 days a week) I can occasionally feel more pressure under my right foot or just fatigue in my right leg, which is what I would expect if it's getting more of a workout than it's used to.

My right quad is slightly smaller than the left (about a quarter inch), so in my weightlifting, I throw in an extra set with the right leg to see if I can bring it back to par with the left.

Bottom line is, go easy on any adjustments or see a specialist - your body has already adjusted for as long as you've been alive, and if you're not experiencing any pain or other issues, leave it alone.