A question of right material in right place, i'm fixing my midbass's to the door inner (interior side) skin of my doors and sealing the holes, now, would i use overkill on the outer skin of the door (road side) or over the top of the damplifier i use on the inner skin?

both if you have enough - i think it comes in most handy for stopping the door card rattling though (so on the inner skin between the damplifier and the door card)

So is it better to put it on the doorcard or over the damplifier on the doorskin?

i put some sponge on the inside of the door card, cost = £2 lol

So is it better to put it on the doorcard or over the damplifier on the doorskin?

doesnt make a difference?