RE: slide failure
My husband and I have just completed the same fix to our Lance 1161. The same as Paperclip did. But ours had alot of dry rot, so be sure and check for it. Good luck! and keep us posted!
RE: Post your MPG in Diesels.
2012 F350 4x4 LB CC DRW 6.7 3.73 toting a 1161 lance pulling 19' skiff
70 mph on flat land 10.5 mpg Sure wish I could get better but I do have a heavy foot!