I have not taken the exam for 1.4 myself but i see a lot of people that score high on the 1.4 The practise exams have a trend of being tougher than the real one so if you have the confidence to take the exam go for it ! Good luck
Dont worry i got 780 and they said i failed the exam. The passing percentage is 800 in the Learnkey. I think you will be fine for the real thing, but do go over all your mistakes. Its a key to succeed in SCJP 1.4
SCJP 1.4: 91%<br />SCWCD 1.4: 85%
Don't get me started about those stupid light bulbs.