There are screw on caps that will fit on to the bosses. Originally designed for the shift (pun) from downtube to bar levers, but they should serve a purpose for you.
Try SJS.
Thanks - have emailed SJS. Could kick myself. To be fair, Armourtex didn't ask me what I wanted doing, but I also didn't mention it. Ho hum.
Thanks - have emailed SJS. Could kick myself. To be fair, Armourtex didn't ask me what I wanted doing, but I also didn't mention it. Ho hum.