My guess is they don't like the grooves and trough cut in the OD. The grooves (as noticed in the pic) seem to be carbon collectors. Also noticed in the pic it looks as if there is a sharp edge at the face/OD interface 
Last edited by W.I.N. Racing; 01/19/24 01:28 PM.
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60
'01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust,
'05 Dodge Magnum R/T - Too Much to list
'60 Willys CJ5
'01 International LPX - Project,DT466, Allison
'64 Plymouth Valiant, Inj 528 Hemi, 2spd
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