Do a lot of spinning for cross training. Thought I'd buy some shoes for it instead of wrecking my trainers - got a fab deal on some Carnac Ellipses but I am not technically minded and I need to put some inserts in and then an SPD cleat. Anyone able to help with an idiots guide to how to do this? Chap in the shop kindly showed me but it was all too much to take in and now I'm stuck. I seem to have an insert for SPD centre distance and an SPD cleat but I have lots of bits (some of which might be duplication) and frankly I don't even know which way up to put the cleat. Really really don't want to have to mortify myself by going back to the shop. Any assistance gratefully received.