Check that the boys didn't make an arse of something, some cars are pretty easy to change, the mini has a few fiddly bits
(basing this on a 02 cooper, some stuff may not be applicable..)
Check
- the silver trim at the bottom of the screen
- The plastic A-pillar panels, check if obviously loose ( be gentle!), check if they've cracked anything where they screw on behind the rubber door/window seals. Check the plastic "gutters" at the top of the A-pillar -these can be a bit loose, but as long as they aren't too bad?
-Check the rubber seal around the top - is this lined up properly, is it obviously loose?( be gentle!)
- Take it for a quick spin, get up to 75-80 if you can and see if there is noticeable wind noise
Previous owner of Mir's mini had the screen replaced at some stage (by barely trained apes unfortunately), so soon after we picked it up:
Plastic A pillar trim blew off (this could just due to the way they are designed, windscreen washer etc will eventually work in under there and degrade the adhesive
??)
The rubber trim on top worked itself loose at one corner on the motorway and started whacking off the roof, very frightening sound to hear from a "new" car until you realise what it is!
Wind noise seemed excessive (like the fan is blowing air through screen vents even when fan is off) although this could be just imagination too!
All pretty much sorted now, but just let it be a lesson to anyone getting this done - go somewhere with a good reputation, and warn em to be careful of the A-pillar trim. Dunno if I'd let any old "man in a van" at it!