I've noticed lately that we seem to be severely lacking in decent glass 501 tips compared to the US, unless I'm missing somewhere obvious? I have a clear Pyrex tip, but it is a little plain. Are there any suppliers that do something like the hand blown ones at Envision Vapor in the US? I see these were available from Smoke Cloud but I missed the boat! They do ship to the UK, so can order directly if none are available here.