Yours is a rare occurrence. I'm not saying whether the above methods are going to work or not. Merely stating that if a QC guy follows behind on a service such as yours, and finds a tinfoil shimmed pole, that can and will result in a failure. Furthermore, will force a return trip to "fix" things.
Do I agree with that? Absolutely not. A lot of custom and non-spec installs seem to be better than what was originally intended by Direct engineering. I liken it to Ford requiring ONLY Motorcraft oil being used, when a lot of the aftermarket stuff is not only cheaper, but better.
From the poles I have seen the D* and E* guys install, they are NOT very thick and would lead me to believe that they would get more returns from poles bending some over the load of the typical wind on the Slimline dishes.
I will never have that issue with mine.