Through my first couple shaves, I also had a problem with irritation. However, I shaved two days in a row. After the second, my face was on fire. I've started waiting 2-3 days between, and have no problem with skin irritation. Plus, I barely have a shadow between shaves, because of the closeness of the straight.

It does get better, I can vouch for that!

I think (although I'm still new) it would be a good idea to get your Wapi and compare the two. Then you will be sure as to whether it's technique or the blade.