05 Busa w/ rs-3 full system. first couple years no problem. But now I have a persistant exhaust leak that will not go away. I have replaced the thick gaskets several times, backed them up with the gold colored Hi temp exhaust sealant, made sure my pipes where properly seated over the sleeves and completely forward, ect.... still leaks. Could it be the that the sleeves are not expanding like they should be? Anyone else have issues like this and what was your fix? Ahh, yes. All the speings have been replace w/ new ones.