For some reason, once the valve spring is compressed, I always struggle getting the locks in and out of the retainers. My fat fingers don't fit in there too good. I've seen some special tools before that seem to make it easy, plus keep ones fingers out of the danger zone. But I can't remember what it was. I'm talking racing valve springs, not those tools for stock springs that you just tap with a hammer. Any recommendations?

Thanks,
Joel