Your ISP isn't Covad though so they are just going to tell you to call your ISP (Cyberonic is Covad's Customer). As to what Cyberonic will do for you, their customer, it is very doubtful they will raise your sync rate speeds if the line drops below certain stats and becomes unstable.
Look at your Downstream Attenuation. What is it steady at?
The general rule is:
For 3 Mbps DSL the Downstream Attenuation must be under 48 dB with 10 dB SNR or better.
For 6 Mbps DSL the Downstream Attenuation must be under 38 dB with 10-12 dB SNR or better.--
Whats the point of owning a supercar if you cant scare yourself stupid from time to time?