Motorola Q

I've found my Q is flaky about establishing its "headset" profile. For example, if I was in "headset" profile, and then I select the "normal" profile - I am then no longer able to return to "headset" profile. Even after explicitly re-selecting "headset," my request is simply ignored. I have to power off the headset, and power it back on. And sometimes that doesn't even work. Sometimes I have to reboot the phone before it is willing to re-establish the headset profile. Is there a fix for this?