Nick

Are you sure your scope is a 'Custom Shop' with side parallax, not a 'Target' model 10-40*50 with front P/A?
The Target can be seen at the bottom of this webpage;
http://www.opticswarehouse.com/acatalog/Tasco_Scopes.html
This scope is not in the same league as the Custom shop as regards optics (or price).

Guesty.