On my '87 CRX Si, the plastic body panel above the front bumper and in front of the hood has been gradually cracking over the last several years. The crack started on top, above the left side of the right headlamp, and has moved down almost all the way to the bottom. Is there a good way to repair it? Would plastic modelling cement be a good idea? Is that panel called the "valence"? I tried looking it up in wrecking yards online but no valences for it turned up. Thanks, Greg