Magnets on WCL/TCL???

[Sarawak]

I have been offered the WCL/TCL combo for my X100F. price is right so I'm tempted. Seller tells me that these are the Mk1 version and each need a magnet to make them wrok like Mk11 versions.

Can someone explain what this means? What do the magnets do, and where do they go? Is this to do with confusing some electrics?

Many thanks.

[Patrick FR]

This might be helpful: https://www.fujirumors.com/fujifilm-x100f-convert-old-wcl-x100-tcl-x100-version-ii-magnets-just-dollars/

[Sarawak]

This might be helpful: https://www.fujirumors.com/fujifilm-x100f-convert-old-wcl-x100-tcl-x100-version-ii-magnets-just-dollars/

Thank you. Most helpful.