Istobal is in Bristol, Va on the TN/VA State line. If it's less than a four or five hour drive I would probably get someone from the factory to assess. I can't imagine a unit that new requiring much to get running. You can get a lot done to a unit for 5-10K. Unless there has been some sort of catastrophic event like a lightning strike that is your most economical option.
Istobal is updating models right now and as of a couple Months ago they had some flex five units they were selling at excellent prices.
If you decide to change out units update this thread and I'm sure folks here would likely discuss further.