I would send a switch to ya if I could figure out how to get it off the parts machine...
Something is definitely off with that switch. If you can only remove the key when it's in the On position, somethings definitely not right. Probably best to get that replaced.
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'70 107 with k301 engine swap
'71 106 with 38" deck
'70 147
R with factory replacement k321, 42" deck
'61 Original with 38" timed deck
'63 70 "pinkie"
1863 with 54" deck
'46 Farmall H, '50 Farmall Cub
105 x2 (parts)