Prop Shop is a lost cause.... I saw them at Leamington (So called International Model Boat Show) and wanted to buy = spend money. They had forgotten to bring items, showed me asingle example of a new coupling after searching various boxes of mixed gear which took my interest so I emailed after the show for details and price and as we welcome in 2007 am still awaiting a response. Have now sent a thanks but no thanks. Other boat forums carry similar experiences with them.
Like so many other 'enterprises' they find a nice little niche earner and so long as the money comes in who cares about customer service, history shows they all end in tears.