going neutral from stability?

Has anyone looked at your stride? Is there a good running store nearby to see what they think you should be wearing?

The reason your calves are more sore is that stability shoes most all have a high heel counter and the move towards lightweight, less stable shoes will put you in shoes flatter to the ground, requiring your calves to work harder. Just stretch them out more often throughout the day and they will adjust. It's actually better for them as the lower profile shoes prevents them from shortening. I also have a pretty low arch...hardly one at all and have run in stability shoes in the past but find they are becoming heaver and bigger---probably to account for the heavier population of runners these days? Through trial and error over the years I have found that some stability shoes actually end up tugging on my achilles or pereoneal tendon and they are preventing my foot from moving naturally. I am currently running in lightweight training sheos with minimal stability and doing great in those. You want to try those before moving to the Speedstar which is essentially a racing flat. Try the Asics DS Trainers first...light with some stability. Some people use them for a marathon racing shoe.