I'm almost finished with my first handplane restoration, a Stanley #5. It will be my first and only such attempt because of not only the work involved but the experience has me convinced the time and effort does not offset the savings in buying new. I'm also disappointed in myself for not checking the base of the plane before beginning the project. It ended up having a crown in the middle that is so far difficult to remove. So, my next purchase will be NEW. What quality can I expect from a Lie Nielsen? I plan to purchase a 5 1/2. Will the base be perfectly flat and sides perfectly square to the base?