Hello. New to the forum, so any help is appreciated! I've rediscovered my early 1970s AFX track and cars (over 75 of them) and would like to get back into the hobby. The track (boxes of it!) is all t-jet pin and clip. The tracks have some rust on the rails. My questions: Is this original track worth using/saving? I can lightly sand away the top oxidation and it shines up well, but if I want to include newer, faster cars to the mix, should I just invest in new track? If so, which do you recommend? I've read that the older tracks such as mine had a short pin slot as opposed to the newer tracks. Any other differences? Thanks again!