Found the tube I made for this procedure. Will post pic and dimensions , but will be Thursday before I have a chance. I made it out of copper ,thought I had used pvc but I must have had the right fitting in copper.
"Forbidden Wheels Clubhouse Recon Team"
2004 30ft Slide Out with Hensley Arrow hitch. Pulled By 2010 Dodge 2500 Diesel 4x4 Megacab