Hi all ,,,well we have an old water stain on part of one of the interior ceiling panels. The panel in front of habitation door. Question how do you cover/ remove/ repaint it / or,,,,,,,,, Bear in mind I am useless at diy etc. Or anyone had a panel removed and rough cost. Want to get it all up to scratch prior to selling or if I can reapply for c1. 3/4 months time brian.