Yeah, Life-Like was acquired by Walthers and I used to get parts there.
But now with the Atlas deal I suppose that Atlas would be the place to look for parts. As you said, they do not have any ex-Life-Like parts listed on their website (yet?), but it would be worth it to call them and speak to someone there who handles parts. They all very friendly there and a phone call is usually much more productive and faster (for oddball requests like that) than trying to communicate via email. In the past I have spoken to couple of guys there (Don Fidecaro and Steve Millenbach). Actually I have to call them too, because I need some gears for one of their locos and they are also not listed on the website. I'm hoping they will have few odds-and-ends hanging around their repair shop.