Solution for small pieces
I have another storage box similar to this which has a groove in the bottom where pieces get stuck .... It was annoying at first, having to dig out all the small pieces, or having to flip the entire thing upside down ... However... the solution is to quit whining and BUILD A CUSTOM FIT SOLUTION OUT OF LEGO! Just find the pieces that fit in the grove and connect a base plate, or just "sacrifice" pieces to the groove..... Banish them to the LEGO storage underworld for the good of "lego-manity". C'mon people!.... You are looking for a storage solution for the most versatile building toy evercreated! You could even build a storage box out of LEGO!... I wish I had money for enough LEGO to do that myself.... Then I wouldn't need to purchase this storage solution.... but I digress....Be creative! .... I'm done ranting now. Keep on building and enjoy your day!