I installed a Safe-T-Plus in my Class A in the driveway and did the centering myself. There is NOTHING to installing one of these and getting it adjusted correctly. You might need 3 wrenches and minimal mechanical ability and some sense of how steering works. My motorhome went from handling like a rhino on a wet clay bank to almost handling like a passenger car, all for $400. Do a Google search on the part number, then go to 'Shopping' for the best deal. This is not a cheap device, so don't expect a much of a variance in price, as it is worth every dime! The most I would charge to install one would be $100, it's that easy.