After sitting for God only knows how many years, I finally got my '74 Spider running pretty good and took it out for about a half hour drive. When I got home I noticed that all four wheel were very, very hot. More so towards the center hubs. I mean to hot to touch! I believe it must be the breaks but what's wrong with them is the question. They seem to work fine but the pedal doesn't feel like it's returning properly. Plan to take a look at everything but not sure what I should be looking for. Any ideas?