Major MicroAir complaint has been the "chip fix". Sorta easy to do, not much more effort to make a longer term fix.

As mentioned I believe all of 2 posts above yours was a potential fix it shop in NW PA, thus US.

I have done the longer term fix, but not looking at making a living off it. I have only done local radios based on info from multiple sources.
I have no capability to do other fixes.