don't have a 17z but have a 184. after approx. 100 miles found out the wheels weren't properly installed. have dealer jack up trailer and make sure wheels are secure. like everyone else is saying, check everything, take your time, if you are not clear on something, dont leave until you are. once you are camping, i have found other rvers are most willing to help out if you have a problem or question. also, this site has been a lot of help to us, as it hs been several years since we had a rv, so we are basically starting over. good luck with your new tt, happy camping.