Also in 1835, the "Invicta" was modified in order to improve its performance. The modification was unsuccessful and led to the locomotive being taken out of service and trains being hauled only by the stationary engines. in 1838, the line was leased to Nicholson & Bayless. The C&WR tried to sell the "Invicta" in 1839 in order to clear some of its debts, but no buyer was found. In 1839, passenger services were five daily. Nicholson and Bayless went bankrupt in 1841 and the line was advertised to let.