dc - Regarding PMDC motors attached to two different gear boxes

Can some one help me on this??

We are using two different make PMDC motors with different gear ratios(motor to gear box to lead screw to load) in one of our application.Below are the details. Application:Solar Tracking systems. Load:Around 1 ton solar structure.

***At No load condition:***
Motor 1:                               Motor 2:       
current: 0.2A                          current: 0.6A
speed:2100 rpm                         speed:3515 rpm

input voltage: 24V                     input voltage: 24V
Gear Ratio:67                          Gear Ratio:57.
Gear working:smooth                    Gear Working:smooth to hard.
Max current rating: 6A                 Max current rating: 12A
Load current: 1.2 to 2.3A(max)         Load current: 2.5 to 7A(max). 

We are using the both motors for same application.

1. 
   

   We have used motor 1 and it's working fine.But we have chosen motor 2 by thinking it has high no load and full current rating so that it can produce high torque.is it correct??

   
   
   


2. 
   

   For lifting the same load motor 2 taking high current. Why? and How to reduce load current??

   
   


3. 
   

   We need to reduce the load current around 3A when we are using motor2.How to achieve this for same load?

   
   


4. 
   

   is there any possibility to increase the load torque and reduce the load current when we are using motor 2??

   
   



5. 
   

   And finally where we have done wrong?and what are the changes need to do to get same performance as motor 1 connected to load???

   
   

Thanks