350 New Clutches Slipping

[AKD2]

Straight 350, fed/Rev Power Steering
Due to moisture /rusted steel plates
Recently replaced both left and right steering clutches and both sides slip. Previously I had fiber discs but light use and long periods of inactivity raised hell with the fiber discs.i Installed new bimetallic and new metal discs set pressure plate fingers with JD#7 gauge. During the 1st shake down run I drove it up to a large tree and it just started slipping on both sides all other functions seen to be correct. It did load up the engine some but in no way threatened to stall the engine I’m new to the bi metal discs I’ve done both sides using fiber had no issues in the as far as set up and adjustment I have a service manual all adjustments are per the manual.
Is there a brake in period?
Same pressure plate as fiber plates?
On both sides I can see the throw out bearing move about 3/8” before contacting the pressure plate fingers.
Or did shoot myself by not replacing the pressure plates this go around? The old plates were rusted and swelled could that have compressed or compromised the pressure plate springs?
This was posted on YT yesterday
Any help would be welcomed

[Lavoy]

Replacing clutches without replacing pressure plate is a waste of time in my opinion, that is why all my kits include pressure plates.
Lavoy