UPVC Door/Window fitters/Locksmiths....Please Help.

[Raffles]

I am currently having trouble with the latch/locking mechanism of an exterior UPVC door. The handle is ''drooping'' slightly and is failing to dissengage the latch from the keep.
What I need to know is is this an easy thing to fix? Can the latch be repaired/replaced or do I need to replace the entire muli point locking mechanism?
Any help would be very much appreciated.
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A good loser will always be a loser.

[Marmalade]

You can buy parts for most upvc doors, even from b&q.

If you know the supplier you should be able to get it from them but a lot of items fit other makers doors
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[Speed]

The gearbox mechanism inside the door can be hit or miss, they like spewing their internals out or cracking the spindle (monkey metal). They used to rivet them on and a whole new mechanism would need to have been bought but most of the ones I come across nowadays have a screwed on gearbox. If that’s the case then take it off and pop it to a locksmiths or somewhere like B&Q and they’ll match it…hopefully. There are so many different ones out there it’s unreal. If you can’t leave the gearbox out of the door then trace around it and re-fit. Make notes of any brands or numbers on the face plate as this helps massively.