Kelly,
I'm so sorry to hear about the spasticity you are experiencing

. As you know, I don't have MS but my nanan had Progressive MS and have just asked my mum and she says she took 30mg Baclofen 3x daily for the Spstricity and even that didn't help.
In the end, my nanan ended up having to get the Intravenious (sp?) Baclofen Pump has it was getting to the point where the dosage she needed orally was just too much. The pump worked really well in the beginning but has her condition deteriated, it stopped working.
I have quite a lot of muscle spasms with RSD and my doctor prescribed me 10mg Baclofen but we were finding that sometimes it was making me too "floppy" and wasn't working on the affected areas of my body so we decided to come off it.
I hope you find something that works for you and I am keeping you in my thoughts.