you can send it to hwh to be rebuilt. they only charge for the parts used, labor and shipping.
send an email to
service@hwh.com. include name, address, phone, vin number of chassis, brand and year. describe your problem.
they will contact you with a RGA number. return good authorization.
it takes around 3 to 4 weeks to get it back. the only price they can quote is for a new box, since they dont know what is wrong with yours.
many report a high level of satisfaction.