I have a pair of 28x700 Armadillos for tyres on my bike. Just received my pair of Mavic Open Pros from Ribble to replace my original and worn Alex rims. I checked the Mavic site before I chose them and the max width quoted is 28mm. On moving the front over first, I fitted the tyres and tubes in as per normal and start inflating. Less than half way through and there is a more noticeable bulge around the valve are of the tyre and a few more pumps and it looks like the tyre edge is about to bulge out of the rim. I have tried rotating the tyre etc but still the same. Are my tyres too wide? Are they used so more supple and probably taken on the shape of the original rims? Urgent help needed as I need to to sort this out before Monday's commute.