My guess is that they increased the capacity to 3oz and it is longer ,height wise,and a little more weight ,so it flexes the hoses and causes it to touch the valve cover. Does any one have the problem with the prevous model. Untill I hear of a fix probably going to hold off purchasing one. I sure do like the design though!
No fitment issues with version 2.0 on my car and it works well. Here is a side-by-side size comparison: