I wanted to buy an electric assist trike so the dealer sold me a Terra Trike Rambler with a BionX assist (P350DX) motor. We live in the Texas "Hill Country" and that's why I wanted an electric assist. I'm a big guy 6'2" 275 that's why I went with the Rambler. This electric assist just doesn't have it!!!!! It works on the flat an mild inclines but NOTHING on the steeper inclines. Did I get the wrong thing? What can I do different?