I'm driving five hours to get some "cores" to reupholster, and will need to remove them from the donor coach onsite. Aside from the basic and obvious tools, is there any chance I'll need anything special? Is it always straightforward to remove these furniture pieces, or are there ever any obstacles? It's fastener corrosion ever a concern? Do the bolts often need cut out? I don't know if any of the pieces are mounted using nutserts that tend to seize, or anything else like that. Thanks in advance.