Could you please tell me "how to" repair a crack in my corian counter top. The crack is aprox. 8 inches long. The counter top is in a 1999 motor home. Dupont does warranty their counter tops for 10 years (according to their web site) but not if they are in a motor home or modular. They referred us to a repairman in our area, but we feel that the 4 hour job @$170.00 an hour is a bit excessive. Can you help us with this? Thanks in advance. Stan