Hi all, I've "inherited" a Turn X incubator (unsure of what model, will check in a bit) that is probably from the 70s. Does anyone still use these OLD models? How do they work? Are they difficult to use? I haven't hatched anything yet, but this year is the year I'm going to start! Also, the previous owner hatched quail, so there is no turning ring for chicken eggs. WHere would I find one for such an old model? Thanks!