Rebuild 904 or swap for 727?

I've heard of using five oem thin forward frictions in the direct clutch, but I only use hi-performance thins in there (.061). The original direct frictions were thicker steel and thicker friction material (plus grooved) because the third gear clutch engages at a higher rpm than the forward clutch. But Alto Red Eagle friction material has a much higher burning temperature than oem. I think Red Eagle makes the grooved plates for those nervous about wandering too far from stock, but they lose 20% of the contact area. The th400 and the C6 And C4 use smooth plates in direct a lot of the time. Anybody have a problem with smooth plates in the TF direct pack? Weird shifting or hanging up?