Switching from SPD to SL Pedals = Knee Pain

[tongue_tied]

I recently made the switch from my SPD pedals using regular cycling shoes (regular meaning non-carbon soled), to Ultegra SL pedals using carbon soled shoes. I now suffer from right knee pain that I didn't have before. This has got to be a cleat alignment issue, right? I mean, of course it feels like my feet are glued to the pedals and I may never get out (and I have checked the tension to make sure it was on the lowest, lightest setting), but I guess that's better than being all loosey-goosey with my SPD pedals. This knee pain just started with the switch of pedals and shoes. Help! Knee pain is the devil!

[MartianDestiny]

Very easily could be an alignment issue.

It's amazing what small little adjustments can do. I would start there.

Some people's knees apparently never do well with zero float (ability to move without unclipping). I personally like that feeling, but if you find even with correct adjustment (and a few tries with adjustment tweaking) that your knee still hurts you may have to switch pedals (seems people with very unhappy knees swear by speedplay's).