A system includes an actuator couplable to a flexible guide tube, a processor, and memory. The actuator is configured to move the flexible guide tube. The memory stores instructions that, when executed by the processor, cause the system to: identify at least one factor associated with insertion or removal of a tool configured to be inserted through or removed from the flexible guide tube; identify, in a first configuration of the flexible guide tube and based on the at least one factor, a section of the flexible guide tube having a bend that the tool cannot traverse; inform a user that the first configuration includes the section having the bend; and command the actuator to move the flexible guide tube to a second configuration. A distal portion of the flexible guide tube is disposed adjacent a target site in the first configuration. The second configuration does not include the bend.