[Boatanchors] Collins 312B-4/5 coupler query

[Yong Surk Lee]

Hello; 
I own a new coupler(rf pick up for wattmeter) which I am planning to use in a 312B-4/5. 
This coupler looks exactly the same as the one in 312B-4/5 but internal component values are different. 
This one has 
R3= 6810 
R4 = 7320 
R5 = 619 
R6 = 681 ohms which are different from the old one in the 312B-4/5. 
Can this coupler be used with 312B-4/5? 
Or was this coupler made for different equipment?