Steveo

I have a simple test - 1 advertiser, 1 campaign, 3 banners, 1 website, 1 zone. I have 1 simple web page, with the same zone replicated 3 times, auto refresh after 5 seconds. Probability is 33% on all banners, I get the first banner all the time. If I deactivate the first banner (B1) then I get B2 & 3 fairly balanced, if I reactivate B1, then I only get B1. ** this is probably the first of several questions to come on the "how" to ensure delivery is what we are expecting. Thanks!