Bests & Worsts Reviews from Amazon

I have been using the treadmill for about 2 weeks now. I don't run, but I've been walking 2mph or less for 30 minutes at a time. In the last week, the belt has started to shift to the right or left and rubbing on the sides which makes the belt jerky. In the instructions it explained how to adjust the belt, and I had done that. Now it seems I need to adjust it daily, and on several days I've had to get off several times during the walking session to adjust it. (Maybe I'm doing it wrong?? I doubt it.) Although it is irritating to constantly readjust it, I can use the machine for my purposes. If I was an avid runner, I would be hesitant to continue to use this machine. Update after 1 month. The treadmill is increasingly getting more jerky. If I had an opportunity to rebuy a treadmill, I would not buy this one.