Need help with MiniKorg K1 switch

Hello - new to the forum!

We’re repairing a Univox/MiniKorg K1 for a customer. The mode switch is functional but has both split shaft ears broken off, therefore a replacement is needed. No joy on internet searches to this point. The switch is a 1P5T 3 deck rotary.

Anyone had experience procuring a suitable sub? We are also willing to try to swap out the shaft if we can find an old part with electrical issues.