There is a notch at the square button end of the handle that needs to engage with the rear edge of the square cut out in the door skin. Your forward hole should then line up. Some aftermarket handles may still need the handle tweaking to get the front hole to fully line up.
HTH
Mo
My VDO Vision coolant temp and rev counter are electrical but my boost gauge is mechanical (that took some finding at the time ! )
Euro market gauges tend to be in °C and bar, US in °F and PSI.
Mo
It's an easy job Harry. You'll be embarrassed you asked after you've done it 😉
You'll need a gasket and a new set of nuts as chances are they'll be a bit rusty.
Take your time, work methodically and read the workshop manual beforehand. No need to remove the turbo or the oil lines to it. Some nuts can be a bit tricky to get to but that's part of the fun isn't it ?
HTH
Mo
Get yourself one of these and make life easier
https://www.ebay.co.uk/itm/Land-Rover-Defender-New-Propshaft-Nut-Bolt-Fitting-Tool-3-8-Square-Drive-9-16-/323724299502?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l6249&mkrid=710-127635-2958-0
Mo
Nothing really to report hurbie, I changed the belt in August so a few weeks late.
Some wear again on the front edge again but not really any worse than last time. I'm not unduly concerned and I expect the new belt will be the same when I change it in 2026.
Mo