I have an older Otter Lodge shanty. It has square poles. I had trouble when it was below O cold working them. In fact they got burrs on them and made it extremely hard to collapse them. I had to order a few new ones. Now I use parifin wax on them and it seems to work much better. I now see the new Otter Shantys have round poles and bigger diameter poles. Better mouse trap IMO. Try the wax first before oil.