Personally, I'd just ditch the Dramm and get a Masakuni or other Japanese watering wand. I know you will be able to get one at the Potomac Bonsai Assocation show at the Arb. in May (6-8) A number of vendors will likely have them. Or just get one off of Amazon.
FWIW, western watering wands are made to water flower pots, hanging baskets, etc. Fine flow doesn't really make a difference with them. I've had a Dram and a Haws (brass) watering wand--got them 10 years in. They always wound up washing soil off of my bonsai because the holes were too numerous and turned water flow into a dribble--unless I jacked up the water pressure and got 1,000 needles of water that blasted soil off too. I used them once gave them away to gardener friends and went back to a Masakuni/generic Japanese made "bonsai" wand. The Japanese wands are made for bonsai, not potted plants in baskets.