Captain Seat Fixing-Bolt

[hawk_navi]

Have just installed a Captain Seat in our new T6.
Having an issue tightening up the bolts that retain the rear of the seat to the base. They appear to look like a mini locking wheel nut. An 8mm Allen key almost fits.
Any idea what I need to tighten these?

 

[MATT WHEELS]

Just done the same
Moved seat forwards, makes it a bit easier, i used a multi Allen key set, can be done

 

[T6ARF]

To tighten them up properly you’ll need a spline bit…. usually M10

 

[Deaky]

It’s a XZN spline

 

[hawk_navi]

Thanks that's great