Hi all would like to know if you can get storage tubes in sizes between 100mm and 150mm.I can't seem to find any.I have a box on the draw bar of my 16.49.1 expanda . 100mm tube is slightly to small and 150 mm is just a bit big. I need something in between if possible.I want to store fishing rods and tv antenna pole. I want the tube to fit behind box.Would like to see photos of other peoples storage tubes.Thanks in advance. Would also like to know what size other people use and how much they can store.in them.