Gut/Gosen hybrid tension?

[netman]

I've read hours of posts here on gut hybrids and have decided to try one for myself. I already play Gosen SM 17 so thought I would hybrid it with 16 gut mains, SM 17 crosses. What I can't get a handle on is what tension(s) to use. I currently have Bow Brand 16 gut in one frame at 57 and Gosen SM 17 in my other frame at 63. I prefer the higher tension, but realize the gut plays closer in tension to the Gosen than I would have expected and I like the power/control I get out of the gut.

So if I hybrid them, what would be the correct tension for each string? Should the gut be at 60 and the SM at 63, or should they both be at the same tension?

Thanks in advance for all advice.
-k-