[Amps] What's wrong here- dropping resistor for DC meter?

[Ed Heimbach]

 Want to meter HV out. Power supply variable from 0 through 4.5 kv dc
 Have 1 through 5 v DC movement.
 I built dropping resistor string to multiply meter by 1000X. 
 Meter now has a non-linear response.
 I.E., 1 volt position corresponds to 1000 volts, 3.25 volt on meter scale  equals 4.5kv.
 
It would be nice if my max. volts (4.5 k) corresponded with the 4.5 mark on the scale card.

 Easy way out would be to  jiggle resistor values to get mid point on scale (2.5 volts) to correspond with 2.5 kv, and then make new meter scale to agree with indicating needle.
 
 Any better solutions?

73 ab3ht