No, torque cant be adjusted anyway, in any servo. Get a servo that have the torque you wanted, and buy a retract servo controller , or another digital adjustable servo that have enough torque. The more torque wanted, the bigger servo though..
Make sure they move in & out easily without binding or slop and remember, pull hard up elevator for out, roll inverted for in if they get stuck, you'll be golden. Been my experience they usually get stuck inside, and if they stick hanging out..... well it won't be so fast. Be advised I prefer my gear down and welded.