Potentiometer from 5k to 10k

I'm working on a Sony XM-1600GSD and the Filter said it needs a 12 pin 5k and I cannot find that anywhere from the USA to China. I stuck a 10k in its place would that be ok? I got the amp with rusted pots so I’m not sure how it sounded but after changing the Gain (6 pin 5k have it), Low Boost (6 pin 50k have it) and Filter (12 pin 5k did not have changed for 10k) the sound comes out playing very nice but the volume is very low to where I turn the stereo completely up and the gain all the way up and it’s like playing at level 2 maybe. Do you think the 10k might have done that? Remember I did not get a chance to hear this amp before I changed the pots. What might be the problem or where should I look? Thanks
 

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Oscilloscope set on AC

IC1
Pin1 = 5.26v
Pin7 = 5.39v

IC2
Pin1 = 1.20v
Pin7 = 4.43v

IC4
Pin1 = 0.00v
Pin7 = 0.00v but flashes random numbers like 338mv, 409mv

IC5
Pin1 = 1.53v
Pin7 = 0.00v but flashes random numbers like 405mv, 280mv

RCA Input with 50Hz
Shield and the center conductor = 2.66v
 
IC1
pin 1 = 0.0v
pin 2 = 0.0v
pin 3 = 0.0v
pin 4 = -17.78v
pin 5 = 0.0v
pin 6 = 0.0v
pin 7 = 0.0v
pin 8 = 17.21v

IC2
pin 1 = -12.96v
pin 2 = -11.92v
pin 3 = -11.45v
pin 4 = -17.73v
pin 5 = -4.67v
pin 6 = -10.25v
pin 7 = -10.75v
pin 8 = 17.24v

IC4
pin 1 = 1.04v
pin 2 = 0.0v
pin 3 = 0.0v
pin 4 = -17.81v
pin 5 = -12.99v
pin 6 = -5.31v
pin 7 = -10.84v
pin 8 = 17.25v

IC5
pin 1 = 0.0v
pin 2 = 0.0v
pin 3 = 0.0v
pin 4 = -17.53v
pin 5 = 0.0v
pin 6 = 0.0v
pin 7 = 0.0v
pin 8 = 17.25v