If you can jack up the front of the cart, try hand spinning the front wheels when the steering is turned hard. See if you feel or hear any noise. This may not work as the wheels are unloaded and will be clear of the frame. DO NOT UNDER ANY CIRCUMSTANCES GO UNDER THE CART. You could also look at the frame in the area of the front tires to see if there is evidence of rubbing. Send me a PM if you need help.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV. 
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