Hi There, In our Compass Connisseur we would like to replace the three white,wire shelves,the plastic is cracked and broken, revealling some rusty bits underneath. The fridge is an electrolux rm4237, alas this model is no longer around.Have tried several companys include some caravan scrapyards but no luck. Is it possible to scrape and clean up the existing wire shelves and what would i use to recoat them?Thanks.Fred.