The link to the GB website is IAGBO :: Index
but they (we as a GB owner) have had an issue with access recently, seems intermittant. There is a fair amount of info on decks. A friend of ours had his decks replaced with FRP and non skid, 1981 boat. It was done by OYA in Oxford. Generally, remove the bungs and screws then the teak, fill the screw holes with epoxy, sand, lay a new layer of glass and paint. I am assuming your boat is glass and not wood. The removal process will show if there is damage to the core of the deck; if there is, it's not the end of the world but maybe your wallet.