Gary as I said in the PM I've seen quite a few of these on remotes.
What exactly do you have on the RIB at the moment... steering? throttle/gearshift? cables?
Please make you own enquiries to get the correct part numbers to be sure but here's a start that looks correct from a USA parts site...
https://www.tohatsu.us/index.php?mai...ucts_id=107532
I've expanded the kit image below.
I see that part number is listed by RibShop in the UK so they may be a good start to phone...
3B2-83880-2
Also surely your nearest Tohatsu dealer could sort this?