Montgomery County Executive Ike Leggett’s ambulance fee proposal — a measure rejected by voters in November 2010 — is gaining support among county lawmakers this time around. The bill would authorize the county to seek reimbursement from insurance companies for the costs of operating ambulances, as the previous measure did when Leggett pushed the fee in 2008. An amendment he added this week clarifies that taxpayers would not have to pay out of their pockets.