I spoke with a guy that works with radiators for a living. He told me to stay away from those dual cross type radiators. He seen them plug and for what ever reason more often than a single cross or down flow. I like the design and understand the theory behind double cross, but not taking any chances with those. It will be another single cross or down flow for me. what I saw with the last cross flow I had with everything running left 3 top rows exposed to air, no coolant in those tubes means less cooling. what ever fits best will determine what type I get. will take some more measures today. Thanks