Buddybar, I looked at all your posts and can't find out what type of RV you have, therefore, I'll assume you have a motorized rig. Many, but not all rigs have a Tee coming from the tank to the side for external grills. If this is the case you don't need to remove the regulator, in fact you need it.
If you have a tow behind and you have cylinders, you most likely have regulated LP already and all you need is the adaptor that replaces the grill regulator. There is a stock adaptor for almost all configurations.
Most supply houses have copies of the catalogs available, or try looking up MB Sturgis or Camco.