Just got a PST. I believe it is an older model, even though it is brand new. The pliers do not have the hard wire cutter notch in them and the Phillips screwdriver works toward the closing side of the pivot instead of the opening side. Do you think this would have any collector value? If not, can the Phillips be replaced with a newer style from another tool? I would also replace the file with the diamond variety, if I did take apart the tool. Could this be done as well? Thanks for any input.