Is there someplace I can find detailed construction information for the new North Country Lakeside travel trailer - things like wood framing, underlayment, roofing, actual pictures of materials used, etc. - not cabinets or appliances - but structural details? Would like to see dimensions, weights - 2 x 4's, or whatever is used - what is "R" value of insulation in sidewalls, roof, etc. Are joints spot welded, bolted, or whatever. How is underbelly enclosed? Would appreciate any info you can supply.