[Hallicrafters] SM 40 Meter

[Paul Whitehead]

Have just gotten into restoring these old Boatanchors and am having a lot of fun. Have just finished an S-38C-works great.
Recently acquired an S-40A serial # HA-99333 and an SM-40 to go with it however there is a problem. When the meter is plugged in and the sensitivity switch is turned on the meter pegs out to the right from it's normal position which is to the right side of the meter.
Opened the SM 40 case and found that (according to the schematic I have) resistor R1 is 20K-should be 24Meg, R3 is 20K-should be 20Meg, R2 (pot Halli # 25-562) is 10K-should be 10Meg. All the guts in the meter appear to be original. Moving wires around simply makes the meter peg out in the opposite direction. I am going to go with the schematic values for the components when I change them.
Would Hallicrafters change the component values so drastically? Possibly to fit a different receiver? Any input would be appreciated.
                                    Thanks 
                                    Paul