That seems right. It's an audio taper, so you wouldn't expect noon to be half. I was thinking of a linear taper when I gave the example of 250k at noon.
Test for continuity between the center pin of the soft clipping toggle and pin 7 of the 4558. Then test to see if you get continuity between the center pin of the soft clipping toggle and its throws respective to the position of the switch, e.g., you should get continuity between the center and the left most pin in the "LED" position.
Do the same for the hard clipping toggle. Test between the center and any ground connection. Then test the positions of the switch. Center and leftmost pin should be "Si" position.
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