I'm hoping this might be a relatively simple issue for the more experienced members! Firstly I should say I haven't had a dynamic fit due to not knowing anyone reputable in my area, but I will look into that if I can't sort it myself.
I've been riding for about 8 years and never had any injuries, until about 2 months ago. For no apparent reason I've developed a pain in my right piriformis/glute sometimes spreading into my right ITB, only present when pedalling quite hard and never hurts off the bike and my right leg 'feels' shorter' No pain on the left at all.
I have noticed my right thigh rubs the nose of the saddle more than the left, and my saddle is square because the frame has an ISP. (can't be twisted)
I asked my training partner to watch me pedal from behind and he says I'm pretty square on my saddle, but if anything slightly tilted to the left.
So, after reading Steve Hoggs stuff, I suspect my left leg is shorter and my body is tilting to protect the shorter leg, causing more rub on the right inner thigh and straining the right lower back/piriformis? Perhaps I should try shimming the left cleat but concerned about doing damage when I don't know for certain?
Any advice would be much appreciated