When work crews showed up Monday to start removing the Chinese drywall from Eleanor Aguilar’s three-story Lauderhill townhouse, she insisted on swinging the first sledgehammer. “I put a huge hole in the wall,” gushed Aguilar, thrilled that her 2 1/2-year ordeal is nearly over. “It felt phenomenal. There were a lot of tears.” Her home is the first of an estimated 300 to be repaired in Florida, Alabama, Mississippi and Louisiana as part of a pilot program announced last year by Knauf Plasterboard Tianjin, one of the largest makers of Chinese drywall.