My TT Centurion seems stable on 160 when running. The current ceramic caps do well but an older doorknob failed. Centurion does not have enough range for matching with SWR > 1.5. I use TT238 to help. Also the harmonic attenuation is so so. When running in ARRL160CW last weekend, I got a few spots on reverse network on 80m. Ignacy, NO9E