MR Cox, I was concerned that the 7X4s were too much load so was thinking of the 7X3s. I don't want to overheat the engines. I see a previous post from you stating that (as you did in the last post) that 7X5s might be a better option. I think I will try that as well. QwkSport, that's the place I usually go. They didn't have any. Maybe they've got some in now.
Thanks all.