Arc Cont annoyance

 From:  Lemo (LEMONNADO)
2690.6 
Here's the image and the file. Just delete the exagurated large circle and try and wrestle a 'cont' arc into place. It will switch up and down but not left/right... A three point is not an option as you would have to eye ball the tangent.... possible but then I can draw stuff quicker with a template on paper, scan and vectorize ;).
Rainer
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