FYI, a quick few bullet points on HO track. Several general types ...
1. "Code" refers to the actual height of the rails. Code 100 is traditional (been around longer) and has a higher profile rail. Code 83 is newer, and has a lower profile rail.
2. Rail material: traditional (older) is brass, which tarnishes quickly; cheap stuff is steel; newer / better stuff is nickel-silver, which looks chrome-like in appearance, and is much less prone to tarnish/oxidation, which, in turn, means better electrical conductivity for the trains.
3. Track-to-track connections ... traditional method (in any material above) is to join track sections with rail joiners. The track here has open ties clipped on to two rails ... the "normal" stuff. Several manufacturers make there version of "snap track" or "fast track" which has a stone "ballast" mound moulded into the track base. Sections of track have mating clips and electrical-contact flanges on their ends to connect pieces together. This track assembles quickly, is great for those who want to have mobile/portable layouts (seasonaly, around the Christmas tree, for example), but doesn't have the look/feel of real-world track, in my opionion.
So, with the points above, can you identify which type of track you have? That'll help narrow down your problems, and hopefully, a solution.