tonearm resonance for my linn lp12


My LP 12 system started to show tonearm resonance. The tonearm is Linn Ittok, cartridge is audio-technica at150mlx. Never had any problem until 2 days ago. Please advise.

Thanks
khsu9547
If you haven't done so already, tighten any screw that can be tightened. Start with the cartridge screws.
Thanks!

Problem fixed