Hi. You probably already solved the problem, but I'll throw this out there anyway. You should leave the shoulder joint as is.
In my opinion leveling should be done closest to the point where the level surface is required.The camera mounting plate.
Provide some sort of adjustment to the...
Go to www.coolingzone.com in the "design corner\tools from coolingzone" section there is information, as well as a calculator, on solar radiation effects on electronics enclosures.