Hi: This is prob an easy question to many, but it’s always intrigued me. I presently have a turntable with an “S” shape tonearm. I have several cartridges mounted on headshells which I use pending type of music etc. Of course mounted as such saves time when I want to go to a different cartridge. If I were to purchase a turntable with a straight tonearm, I suppose I will have to remove the cartridges from the present headshells and replace them with those designed for straight arms. I believe this is due to the different angle in which the stylus rides in the groves. Am I correct? If so, is it possible to arrive at that angle by adjusting the cartridge in the present headshell. thanks in advance.