Sorry to hear of your frustrations with the Tristar 38(t) kit. As Erik has mentioned, Tristar is on par with all the top-flight armor kit manufacturers and produce some very highly detailed kits, considered by some to be the best depending on the vehicle/kit in question.
With the modern advances in molding technology, the model-building community in general has tended to demand higher quality/detail in the kits produced and that in turn has led to the manufacturers moving away from simplified molded-on approachs and more parts being produced separately/indepently. This of course can be taken too far but that usually depends on the builder's skill level as to when that point is reached. One of the beautiful things about the internet is the availability of reviews and communities where individuals can get information about kits before they buy so they know what they are (sort of) getting into.
As to the tracks, they are meant to be static tracks after assembly and the "friction fit" is just to aid in their assembly. There are many methods out there for indy-link (the type your kit has) assembly. Whichever method you choose, be sure you factor in the need to also keep the sprockets and idlers removable so that you can fit the tracks correctly after you've got them assembled and painted.
After-market tracks are an alternative as well but have their own potential issues you will have to contend with depending on which type you use. Fruils for example are workable white metal and are assembled using wire or pins and have to be handled/painted differently from styrene as a result. Model Kasten are styrene workables but are more fragile than Fruils and also require clean-up/time investment to assemble them.
Welcome to the forums and best of luck with your build!