Thanks Rog, much appreciated all.

Here’s a pic of the fill valve

Thanks Roger, where should it be, just so I can check it’s not missing. I have a slow Jubilee valve on my bottle but would like to be sure.

Thanks guys. I’ve found the adjuster. No anti tamper, just an Allen bolt and o-ring covering the adjuster screw on the right hand side. Fill line restricter ?

Hi guys,
Would appreciate your advice. I just bought a 2010 S410 with some “extra bits” in a bag ...

https://postimg.cc/gallery/1cxog5vsm/

Is that evidence of the anti tamper been removed and is the hex screw the power adjust ?

Thanks, Mike