problem with glass flower type feeder
I recently purchased two beautiful blown glass hummingbird feeders from Lowe's. They're "Garden Treasure" brand feeders. One is an aqua color teardrop and the other is a yellow crackle glass gourd-shape. Both have ports towards the top which are surrounded with red rubber grommets, into which fit removeable red glass flowers. The flowers have long hollow, open ended tubes as stems. The idea is that, when the flowers are inserted into the filled feeder, the nectar should enter the tube and the hummers can then drink it by inserting their beaks & tongues into the flowers. My problem is that the nectar doesn't flow up into the tubular stem. Even if I fill the flowers directly using a funnel, the nectar just drains right down into the main body of the feeder. The hummers are interesting in drinking, but can't get any nectar. I've looked at various websites on the Internet that have glass feeders for sale and this glass flower/port idea seems to be a common style right now, so I'm wondering why it isn't working for me. Does anyone have advice or hints that they can share?