Help! gear selection issues with Focus ST

[Al3xc]

Hi guys, Hope someone can help me. I had an RS clutch fitted to my 07 plate Focus ST on Friday and it's been great. However, last night it stopped selecting 5,6 and reverse. I'm imagining that the mechanic has disconnected the gear linkage and failed to put it back correctly? It was working perfectly initially. Does anybody know where it is, and how to fix it? I would take the car back but the garage is 40 miles away and not open until Tuesday!
Can anybody give me some advise please? Thanks

[GaryST220]

On top of the gearbox, probably. Remove the battery and (or) the airbox and take a look.

[Justin S]

sounds like the linkage rod has poppedoff. Sod to see with the airbox/ air flow meter in the way, but use a torch, you should be able to see it on top of the box