Use something like Framesaver or a product like a chainstay protector and put it along the frame where the adjusters touch the frame. I use a clear chainstay protector product that is not visible when applied properly. You will want to protect the frame from housing rubor adjuster rub anyway. Works great and easy to apply. Put adjusters along the frame headtube or in front of the headtube -- it is your choise. Make sure you have a very good pair of cable/housing cutters and then make sure the cut is clean and the hole is reamed open. I also like to have the adjusting barrel on the bottom end (like the pictures show).