Triangle Monitors--Port Noise Complaint

I own a pair of Comete monitors from Triangle, and a single Titus (funky deal, possible center channel). These are front-ported designs. Tonight I was running a test CD for bass rolloff (Chesky Stereo Review Test CD track 18 "Shake Rattle and Roll") and noticed horrible port noise with each model. Kind of a high-frequency sputtering sound. The track is designed to "detect spurious resonances" excited by differing bass frequencies in a room, which it does well (the stove in my tiny apartment needs vibrapods now), but it is also useful in finding where speakers roll off their bass response. With the Cometes the noise picks up at about 70-75 hz, with the Tituses it's around 85-90. It is BAD and extremely audible from the listening position.

I had hoped to run the speakers full range, but now I'm wondering if I should run a subwoofer with an active crossover of some kind to choke off the offending frequencies. I have heard that cutting straws to fit the port hole helps, but I don't want straws getting lost inside my speakers. Does anybody out there have suggestions? Do all small ported speakers have this problem, this bad? Ay carumba!