clutch slipping in 4th gear

[flow]

just the other day i believe my quadrant broke..at first i thought it was the cable.so i brought it in to the shop to change it..cable was good, the guy tells me the peddle housing is cracked i tell him no way that cud be true i tell him to check the quadrant. long story short i didnt get to inspect it myself due to work
the guy say he replaced the housing now clutch peddle is low to floor and its much softer than what it was and wen i get on it in 4th it slips..what do you guys think the prob is..keep in mind no probs with clutch at all till this dude messed with my car

 

[Wicked One]

I would have to say the quadrant or the adjustment on the clutch cable down on the pressure plate.
If it is way low, then the quadrant needs to be inspected to make sure it is in the correct position and also the firewall adjustment.

good luck.