Hi am after some advice about scope covers. Was thinking about butler creek flip covers but struggling with sizing. They are to go on a s&b 2.5x10x56 scope. The eye piece is 42mm and the objective is 62mm according to s&b data. The scope covers are either .5 mm larger or smaller which do I get? Will they stretch or do I need the bigger ones and pack them out slightly?Are butler creek the best? Any other suggestions very welcome.