Hi. We have 'inherited' a Marley greenhouse.Its about 10 feet by 8 feet with long panes of (mainly) 4mm glass on three sides which are about 5 feet long and 2 feet six inches wide. My problem is replacing missing glass clips. The profile of the alum frame is deep and the few clips I have are sprung s/steel about 25mm wide, sort of 'S'+ shaped and about 40mm-50mm long. They are most definitely not 'W' wire clips or little s/s 'Z' clips. I'm told Marley Greenhouses have gone out of business. Help! Where can I get these clips? Local garden centres are useless.