I'm making a 10'x10' awning for my van and would like to have a pair of 10' telescoping side poles to extend away from the van. The trouble is nobody seems to make telescoping poles longer than 9'. I'm scouring Amazon and have already been through McMaster-Carr. I can extend some shorter poles but having it all in one telescoping section would be a little more tidy and to my liking. Any ideas?