I just bought a 1986 cutlass salon 307 h.o with 67,000 miles i got the car running the other day and noticed really bad exhaust leek on right side of motor after a more further inspection i noticed some one had tried removeing the air injection tubes from the smog pump from the head and snapped all four of them so their are 4 tubes sticking out leak like crazy!!...ANY ideas on what to due? has any one ever had this problem?..I dont want to replace head any help would be great..