depending the motor that is how i realign motors. there is also other tools i have made to seperate the plates from the slugs to clean old glue out and put in new glue in.
those pbx subs are total custom being i removed the top plates and bored and then realigned. i build subs from without pulling ts or any of that as i dont make quanity i build from experience and personal knowledge of the parts i am using. i knew you would be happy with those 15s, turned them into sql monsters!