Master's comment that the da-this resolution does not correct the problem that is causing because if there is a space for a place – Rack, but do not have a Rack., it is treated as the empty vacuum solutions.
Toda cob comment that the solution to this problem. Not solve the problem at the source If there is no space for new Rack Rack to send it constitutes a solution that is wasted.
Toda sang comment that solving this problem does not solve the problem at the root. Because if there is space for placing long Rack but no Rack sent, it solves the problem that a waste!