if it leaks from the bottom left and bottom right, it might be down to overfoaming, a tip is not to use rinse aid if you also use 3 in 1 or 4 in 1 tablets, as this causes overdosing.
the bottom seal isnt a water tight seal, just a splash seal, so guessing its not poor sealing. Hope this helps, hard to diagnose without seeing it, good luck!
Jason, June 2007