There are 3 possible ways of doing it.
1) Get an extend-a-stay kit. This is how I would do it myself. A Tee goes between your 20lb and hose and you should be able to get the right hose to connect a 100lb to it.
2) get an extension hose to go from the 100lb to where the 20lb would connect.
3) see if you can find a longer pigtail to go from the regulator to the 100lb. They must make various lengths.
TV - 2015 Ram Truck EcoDiesel
TV - 2006 Jeep Liberty Turbo Diesel (Retired to Daily Driver)
TT - 2015 Rockwood Roo 183
Nights Camping --- 2015 - 19 Camped | Winterized -- 2014 -18
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