Vintage Marx H O Train Set An Original Box Got It For Christmas In The 1960s

Vintage 1960s Marx HO Tain Set in original box. I got it new for Christmas as a kid. still in good shape, the box has some pencil holes and wear as can be expected... it was played with. It still has the Western Auto price tag on it. Now for the important stuff... the engine and the cars are in great shape, two of the curved track pieces are missing a prong - see photos. I put it together and tested it today and the train did move forward and backwards, but it did not want to go all the way around or fast. my guess, it needs cleaning and some TLC. I did my best in the photos to show the condition please look closely. All sales final No Returns. thanks for looking.