In our downstiars WC we have a semi-recesed sink mounted in a 600mm unit (bought only 4 months ago from Plumb Centre). The unit is a shaker style, glossy white. The top, back & sides of the unit are laminated chipboard. Not entirely sure what happened, could have been one of the kids, but the short stubby screws that hold the hinge for the RH door have basically been torn out of the unit side. Where the screw holes were is now a "crater". I tried to fill the holes, left them to dry for over a week and then re-drill but the filler has just all come out with the drilling. How can I fix the hinge and therefore door back on without going to the hassle of replacing the side of the unit/whole unit? I did think of moving the hinges up a bit but the other half of the hinge fixed to the door has a large circular recess which would also need moving and I just don't have the tools or skills to move this. Any tips please...