After Pacesetters mids install i have leak

The mids came with a Y pipe and it gave 2 clamps to attach it with. There is a load exhaust leak and brown/black residue coming from the clamp area. Is there an easy fix or way to bandage it? I think they make clamps better than U ones that seal better. The muffler shop says they can't weld coated headers but maybe there is a way to seal them.

Get yourself some band clamps and hope you didint distort the pipe with the uclamps

Cant they grined the coating off in that specific area and weld it, you can get clamps that are much better then the skinny U clamps they are flatter and wider clamps i think its something like the ones that Borla catbacks use but not sure.