I trust you are rebalancing the arm when you add the nickel. A nickel weighs 5 grams. If your not, coupled to the VTF that the arm should be set at, 1.5-2.2 grams depending on your cartridge, that’s a lot of force on top of your records! I can’t imagine this kind of weight doing your records any good. Or the suspension and the cantilevers.
Are you sure the VTF was set properly for either of your cartridges? Also, what kind of alignment protractor are you using? I use the Baerwald alignment on my Traveler and the manufacturers recommended tracking force and have no problems with my Traveler - just pure, unleashed music.
The Traveler is a HiFi deck; not a DJ deck. It shouldn’t need nickels or even pennies on top of it’s headshell,. Especially with the cartridges your using. The effective mass of the Travelers tonearm is a perfect match for the compliance ratings of the cartridges you are using. You may want to look at another solution. Good luck to you brother.

