A very experienced CF tech:
Contact Rudy Compart :
rudy@acceleratedindustries.com (952) 681-1000
He is located in the the Chicago area but has traveled to other cities to work on CF. You will pay his expenses to do so.
OR, You have to find a chrysler dealer with a trained Crossfire tech or you could take it to mercedes, its the SLK 320 platform exactly, if I understand accurately. Mercedes will chuckle but they should take your money to fix the vehicle.
Another thought, when I purchased my CF a year agao, I purchased a 5 year extended warranty from Chrysler, I paid $3200, have use it 2X in one year. May have a leak in the back (small) but plan to pursue every repair needed for the $100 flat fee. You should contact several dealers, the warranty prices vary.
Good luck!