Hi,
I have tremor dominant PD for nearly 17 years. I understand very well your situation. At the end of the first 9 years I had a unilateral DBS at VIM. The result was and is a miracle. Tremor never showed up on that side any more. Here I will give you a link where you can find more info on DBS.
https://groups.yahoo.com/neo/groups/DBSsurgery/info
In the group we discuss all DBS related issues. You will be welcome.