Not seeing what you're trying to get repaired. I'm looking @ getting one of my Grants repaired. Found Snake Radio Customs online. He has said that he will rebuild & fully align a 148/ Grant for $150. He did say that it would take 3-4 months.
He's been known to take a garden hose to Cobra 2000's to clean them out. That's mainly because of the video he posted on YouTube of himself in his backyard hosing down a customer's Cobra 2000.
I have always been told that there are 3 types of work, Good, Fast, Cheap; pick any two.
Sometimes you get to pick 0.