I need to know what can be used to replace a breather tube of a parker vs. I heard
parker vs has a breather tube, but recently I have one which does not have one. my questions are

1. Can Teflon tubes, which I use in parker 51 vacs/ parker vacumatics be used?
2. what should be the length of the tube?
3. I have some tubes from parker 51 vacs.They seem to fit. Should I use them?
4.Is any type of special drilling or modification needed?

If anybody with a parker vs experience helps, or post a photo of a vs breather tube, I will be really obliged.