I have a GE Potscrubber 1230 dishwasher (GSD1230T63WW) and the closing latch seems to close properly but unless I jam a piece of folded cardboard under the latch when it is closed, the unit will not run through cycles properly. Is there a down-loadable diagram that would show how to disassemble this mechanism and show how this works? I wish to attempt to repair. Thanks