Pyoungbl has done a great professional job with removing some of the ledge from his thermostat housing
But is possible to get the job done with some basic tools, I used an electric hand drill and a small grinder attachment.
If I remember correctly, your original thermostat will still fit and work after you have made the modification should you wish to change back.
A simple thing that you could try that's easy whilst you decide is to make some radiator covers.
See here
http://www.chinariders.net/showpost....&postcount=208
I'm using these as extra to my 85c thermostat with no problems