Your first problem is, you went to camping world to have it installed.
Your second problem you got the Invisibrake, they may have solved the problem by now. It tried to toast my brakes on my 98 Honda Accord.
http://www.irv2.com/forums/f85/roadmaster-invisibrake-problems-196392.html
JR
2006 Country Coach Inspire 360 40ft Genoa Designer Series Cat C9 Samsung 197 RR
Aluminum Radiator was recently replaced with a STEEL & COPPER Bolt Together Radiator w/ updated rubber mountings
SilverLeaf VMS 330
Toad--2011 Ford Edge Sport, Air Force One
:C