Good to know re: burping, ac12. Thanks! I'm learning that I have lots more to learn.
definitely a desk pen...AC is, per usual, right. They are a little temperamental. And, there is a specific method to filling them. You need an empty jar next to your ink bottle. Fill the pen completely with the eyedropper. Keep the ink bottle open. Holding the barrel open end up in one hand, start screwing the section into place. As you turn it in, turn the pen over so the shortening of the pen forces ink out, back into the bottle. This will create the proper internal air pressure. And, you'll need a small jar of silicone, sold by every pen supplier, rub a little into the section threads before filling the pen, to seal the ink in. Ink is really viscous stuff and finds its way through any unsealed opening.
My Varuna is a very large pen, sort of like a cigar. I use it as my signing pen at work because it would not get used otherwise except on my home desk, where my MB149 runs the show. Blurping from that pen is an environmental incident, so I'm careful with its use. All that said, I love the pen for signing and it gets regular use that way.