And now but tinker further, heck yes!

First rides
Out of the box with just a few adjustments( shifting, hub play)my 53cm Mercier was fine. No complaints about the parts except I changed the saddle for preference. It rode fine like that for awhile before I went into the bearings for regreasing. I ride a 56-58 sized full bike and the fit was okay, nothing extreme.

I really like my Nano!