As Martie said, make sure they are clean.
Contact them before sending.

Mine have been back twice.
Once for compression leaks where they replaced the booties to the newer style.
Second time was for a leak at the bootie-pant leg connection.
They said that they couldn't fix them and could they "recycle" them for me ?
Fawk no ! Send 'em back.
Which they did along with the dreaded "Red Stamp" which means no more warranty work.

That was two seasons ago...I fixed the leak with Aqua Seal.

They are "Guide Weights" bought in 2000 and primarily used in summer.
Still going strong.

Next pair might be Dan Bailey or Redington.