After getting my new road bike at Christmas I got road shoes and pedals (spd sl) both are Shimano. Previously only had a mountain bike with platform pedals. Went on a 29 mile ride with them for the first time. I have bit of knee pain on the outside of both knees. I think I am a bit duck footed and need to angle the cleat so that my feet point out a bit. The problem is that if I do that my heels will hit the crank arms and I already have the cleats as far over towards the bike as possible to try and give me extra room.
I am now thinking that I need pedal extenders to bring my pedals out a bit. I have seen some 18 and 20mm one on the net. Does anyone have experience with extenders. Will this have any adverse effect on my bike (Giant TCR Advanced with Ultera compact chaining)