i got two bonnevilles a 93 and 94 both have massive air leaks which adjustment simply will not fix. does any one know where i can purchase new sunroof seals for these beasts? gm no longer sells them, gm parts direct has nothing, the noise is over powering and before i break out the silicone thought id ask here hate to make them inoperatable but hate the noise, maybe someone has a couple extra, any help greatly appreciated thanks