7800 ICP-MS Tuning

Hi all,

I have several questions about this tuning report, picture attached. The doubly charged percentage is too high, how do I improve this, what is considered acceptable or normal?

Also the peaks don't look too sharp, they are wider than what I am used to seeing, how do I improve the peak symmetry, the peak for 205 looks very jagged at the top, how can I resolve this peak better. 

I would greatly appreciate any feedback you can provide. 

Thank you!

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