PTF's are not for J routes. 2 J routes would alternate Saturdays. You have 1 rca, and 4ptf for 12 K routes. 5 carriers can have Saturday and 7 can have non Saturday. And you can squeeze out more Saturday reliefs if a few agree to fri/sat alternations.
But yes, things are written. You literally can download the contract and use the search function...wow! Things are written plainly, you can grieve any part of it. On your scenario, 2 relief carriers are sitting home but in reality they're borrowed out to another office scoring your pm brownie points.
Put an end to it, or don't.
And stop being uninformational. 14 routes...okay? How many aux, contract, h, k,j? Nope we's has 14tane routes, how's ah we gonna have dayz offf?