help hard break pedal weak breaks after swap

talked to right stuff again today they seem to think the brand new booster i got from them is junk so after i had it painted and all the crap now i need a new one to replace my new one thats 3 months old

o yea sir there on back order
WELL jeeez thats really good


so will see i dont really know if thats the issue i guess its worth a shot when ever it shows up im finally ready to drive the car and cant BULL $hit so tired of companys selling junk and i seem to get it all on my door step