03 Detroit 60 series 12.7 Jakes rattle like metal on metal? like hammer inside?

Hey so I have another question, I’m wanting to replace my Jake heads on the 2003 12.7 60 series…
I currently have the 2 piece setup but I’m wondering which is better? Should I get the 3 piece ones? Or just new 2 piece? or are they even compatible?
Thanks!!

 

I know this is an old thread but I’m not sure how to start a thread?
I am replacing my Jake brakes.
795’s are currently on the truck, but the new set I picked up are 797’s… they look the same except the 797’s only have 1 solenoid per head vs the 795’s that have 2 on one head and 1 on the other…
Anyone know if I’ll have any issues just mounting them on there an connecting only the 2 solenoids and removing the extra wire?
I assume it should work fine but I’ll only have high and low rather than 3 settings?
Any comments? And advise?
Much appreciated!
It’s on a 2003 fl classic 12.7 pre egr.

thanks!