Aluminium wiring and copper connectors

[Inderpal Chadha]

Hello

We just rehabbed a property and is currently under contract. It turns out that the place has aluminium wiring and the inspector has asked to use copper connectors. I have come across this http://www.cpsc.gov//PageFiles/118856/516.pdf , which mentions that cheaper alternate to replacing the wiring is to use connectors. Has anyone come across this issue and any recommended solution.

Thanks

Inder