So I got this pop up..... If anyone knows what year this Coleman Columbia is, that would be helpful. They said it’s a 1992 (working on getting the title). I think it’s a 1988, possibly 1986. It has an expand-a-bed in the rear bunk. (I do not see vin number stamp or sticker anywhere.) Everything flammable has to go, lol. I’m looking for ideas/product suggestions to wash down the metal/frame once all the wood/fabric is out. Once that is done what smaller/easier step(s) would you suggest to do next? I know this is a huge project and I’d like to ease into it with some quick gratification. Plus winter is coming and indoor work space is limited. Thank you in advance for your advice and support!