Bests & Worsts Reviews from Amazon

I've read all the answers from Brita to the comments posted by unsatisfied customers about the filter NOT staying sealed tightly. I know about first rinsing a new filter in cold water for 15 seconds. I know that you need to line up the filter with the grooves. I know you then push down hard the filter so it locks in place - so called! AFTER HAVING DONE THIS, the filter still pops up a fraction causing water to leak through the sides of said filter. Now, I am 6'5", 250 lbs. I lift weights 4 days a week. I am not a weak duckling. Yet, time after time, even after pushing down the filter with all my strength, the filter will not stay tightly secured in place. Why there is no rubber ring for added sealment remains a mystery to me. Why they didn't design this to "screw" said filter in place so it is water tight (versus just dropping the filter into the pitcher and pushing down), is a mystery to me. And, even when the filter does happen to seal a little tighter than it normally does, as soon as I move the pitcher about (to pour water for example), the filter will pop up again. The design is flawed, plain and simple. I do not have a bad device per say, it's just that they did not design the filter housing with effectiveness.