cliff666

i have a boost leak somewhere in the car. i redid my chargepiping with new couplers and replaced the wg spring to the small green(7.5something i think psi). ran it directly off the wg and went for a test run the car only boosts to 5 psi . i put the hallman on it for now until i can find the boost leak but id rather have this resolved. there is some carbon by the wg flange to the wg how would i be able to check for leaks? wat would be the best way? there doesnt seem to be any leaks by the manfiold to the block. is there any type of sealant i can put around it?
any help or ideas would help. thanks