I have a Specialized Ruby carbon frame bike. Yes, I know I can flip stems around and such to get an increase in handlebar height. But, has anybody ever used specifically, the Specialized Headset Extender shown on their website? If so do you like it, does it work well, and would you recommend it to raise the bars a little higher?

Last season, I had the perfect stem and height. But after a long winter layover without much activity due to some ailments, now resolved, I find that the position is a little unsuitable from when I last used the bike. I'm working on strengthening my core again, and seemingly would only use the extender as a temporary remedy until my core strength and flexibility come back where I can regain my former bike position a little later in the season. I am finding as I get older my fit comfort is dynamic depending on where I am in the season.