@
lokvo I would get a new workshop/tyre shop. ANY tyre shop should be able to provide you with ANY type of valve stem to suit your wheel, for cheap. Eg. For my rays 57DR we had to chop the oem valves for paint. Tyre power then charged me $15 for 4x stainless short barrel stem installs as part of tyre fitting. If they can't do similar, they are lazy and uncompetitive.
Nice wheels GL.