If the speakers is mounted properly..there shouldn't be any air leaks...between the cone and the motor structure...if there is a hole in the cone...the air from the back wave will try to work its way out the cone...causing a ripple effect which in terms will cause some audible distortion.....
Yes, as far I as my ears can tell, they sound great. So there should be no problem as far is sound goes right? Just physically right? Dammit, bad resale value now but I don't think I will sale them anyways, they sound super.