Stuart marriott

I have checked and yes it's 4mm x 4mm Thank you wombat

Ok wombat thank you will check ✔️

Can anyone tell me the size of grub screw I need for the propshafts on my ftx tundra outback 2 as I have lost one whilst trying to fix a problem I had Many thanks

Doesn't look like any marks will try some lock thread and see what happens ,thank you

Both seem to move ok I have greased them a little but still happens

Hi I own a ftx tundra outback 2 and I find the propshafts come away from diffs ,the grub screws are tight but it still happens any ideas what I can do to stop this