Dear lewm: """
with the arm mounted according to factory instruction """
What I'm saying to you and dover is to use Baerwald/Löfgren alignment according the " numbers " calculated in those alignments: offset angle, overhang and P2S, what must stay the same is the 505 effective length.
You did not changed the P2S and that's one of the main problem with those distortions you mentioned.
I know that's a pain in the ass to change ( in any tonearm. ) the P2S each time we want to change the alignment but if we choose ( example ) B/L alignments and we want to stay with the same distoertion levels then we have to mount the tonearm and cartridge according to those alignment calculations if not then distortions goes higher as you experienced.
Anyway, only to clarify my opinion .
Regards and enjoy the music,
R.
What I'm saying to you and dover is to use Baerwald/Löfgren alignment according the " numbers " calculated in those alignments: offset angle, overhang and P2S, what must stay the same is the 505 effective length.
You did not changed the P2S and that's one of the main problem with those distortions you mentioned.
I know that's a pain in the ass to change ( in any tonearm. ) the P2S each time we want to change the alignment but if we choose ( example ) B/L alignments and we want to stay with the same distoertion levels then we have to mount the tonearm and cartridge according to those alignment calculations if not then distortions goes higher as you experienced.
Anyway, only to clarify my opinion .
Regards and enjoy the music,
R.