They probably don't know how to Export the Raw Transaction from Electrum and copy/paste it to Mara slipstream window.
But anyway, if someone wants to pay for copy/paste 10%, I'm here.

No, I mean if he could transfer puzzle #66 to his own wallet using RBF, bsgs method …
Would he return 90% of the reward to the real finder? (The one who proves ownership by sharing sha256 of publickey or privatekey before broadcasting the first transaction)