Not knowing your TT, watch to see it dosent bottem out. Get a jack stand for the toung, and have wood for the stabilizers in the front. Yes, get some heavy duty rubber chocks. Do each side. The x chocks are not chocks but more stabilizers ( i know you use chocks also). So never use them on there own, it atually says that in the manual somewhere. Remember the stabilizers, are just that, and not ment to level the camper. Its not like a 5th wheel. Since you are in pa, it might be a good idea to not level it compleatly in the winter, so snow and rain runs off away from the garage. And off the camper. Wood may be needed under the wheels,so your tires will not indent the asphalt.