Sorry, i mean remove about .5 mm out of the “plate” contact surface the t-case, so that the plate is recessed in the case. that way you can have a “better” chance with it sealing with more contact area. I would also recommend counter sinking the holes of the attaching bolts ~.3~.4 mm, this would also help with the bling factor. Also removing some of the material in the center would be nice to.