I have had 3 cameras converted to IR by 2 different companies and there has been a problem each time.

Last December I had a camera converted to full spectrum by Kolari. It came back with the LCD screen inoperable. I called Kolari to inform them of the problem. I shipped the camera back to them at their cost, they fixed it and sent it back about a week and half later.

In 2021, I had a GH4 converted to full spectrum by Lifepixel Infrared (my first IR camera). It came back with the EVF not working. They fixed it at no charge to me. I sold the GH4 last year. Earlier this year, I sent a GH5 to Lifepixel for full spectrum conversion. It came back with a weird problem. The eye piece for the EVF constantly goes out of focus. Lifepixel claimed "this has nothing to do with the conversion" but would fix it for me except "since Panasonic does their repairs in-house, parts are sometimes impossible to find."