Update: The transmitter was sent back to Marshall. They did not warrant the item as I was told would happen on the phone. They did give me a better deal on the replacement transmitter though than originally offered. They gave me a $100 dollar credit towards a replacement. It was a nice gesture and better than i was expecting after the original phone call. I did use it on a tail mount scout (I had already ordered a tail mount micro for my gear set to use until I had resolved this issue. I had installed a backpack and used the Micro until the Scout came in.

I'm still a little dissapointed that a transmitter used as intended can break under warranty with a non-repairable part and it be considered not under warranty but I am happy with Marshall's communication and ability to realize that a transmitter should last longer than 4 months and offer at least a better alternative than the original offer.