Not familiar with any vpi TT, nor that cartridge, however it may be a mismatch...take the weight of cartridge w/ hardware and the mass of your arm and plug the figures into vinyl engine resonance calculator for a start. Like others have mentioned, check your alignment, tracking force, vta, anti skating, TT level, its proximity to speakers, what it is sitting on, the cleanliness of your stylus, etc....lastly, NO two lp’s sound the same! Try another copy of troublesome lp’s. One expensive option, but often worth it, is to purchase an lp from better records. He has done all the hard work for you in finding the best sounding copy. I’ve bought countless records from BR and they sound great. Also, some lp’s were recorded and engineered to have the vocals in mainly one channel, they are not all front and center, it will vary from lp to lp. To me, even with my so called modest TT (music hall mmf-7.3/ 2m bronze), my lp’s sound terrific. Of course, there are a few that don’t, like anything else. You might also want to revisit your phono stage....I think you can do better there. The phono preamp Is a very important piece to get you better sound. The only way I’d get rid of my analog lp gear and records is when I’m dead! To me, collecting and playing lp’s is the most exciting and fascinating part of this hobby or endeavor. Heck, I have some cassettes that sound better than anything digital!