Initially had same problems as others (seemingly off center holes and panels that didn’t align) but as I persisted, learned that the kit is very forgiving if you assemble screws _loosely_, stack for alignment then gently tighten - everything aligned nicely.  Tossed the included rusty wrench and used finger tightening then my compact drill and metric bit set.  Mainly for wife’s size 6 but my size 12 fits ok.