Bought after market wheel/tire assembly when my 2003 tiger cub wheels went bad. One castor tire went flat, found no nails, screws, thorns, etc. Filled wit tire inflator/sealer and noticed a 4" part of the center seam weld had 12 leaks all at the center seam. The sealer stopped all the leakage, but am now unsure of the integrity of the weld seam. This weld seam holds the two verticle halves together. These are WANDA 13x5.00-6 tires. Wondering if I should get new tires or take a chance the sealer will resolve the issue.