How much metal flake is too much?

Hooking up hitting second gear is hard on them. Are you going back with a high quality bolt in sprag? I would. Also, a manual valve body with low band apply is another good thing.
I’m just putting it back together as is. My plan for the truck is a 440 with either a TR4050 or an NV4500 trans. So the 318 and 727 are only so I can drive it around for now.