I am having a problem finding standard shaped plastic/acrylic/delrin 510 drip tips that fit my Nautalis mini. About 80% of my 510 drip tips fit really loose in the Nautalis and I cant stand metal tips. I have ordered from several of my normal vendors and even in the same style and same batch, only about 1 out of 5 fit right and my my local B&Ms have a very scant selection of plastic tips. Can anyone point me to a source that has standard 510 tips that have a consistent tight fit? I am sick of ordering five to get one that happens to fit. I want the regular old school standard shape...not long, tailpipe, ming, or elaborate. Basically in the shape of the metal one that comes with it, but plastic.