Ravi,
Sorry for the late response. All good people posted above gave very good advice. The immediate thought comes to my mind is , Don't leave it. It is the correct time to strike again. You just take Maha's words. You WILL SURELY become SCJP the very next attempt. Now you know how the real exam looks you are in an advantage to break it again. We are all here with you. Come on. Lots and lots of people are with you , right now reading this thread and want some advice/suggestions , but haven't posted here. I am also not a very good test taker. But I knew my weekness and accepted and I tried and tried and tried to practice and manage the time.
You know what Ravi, The very first time I took a sample test, I almost ran out of time. Just barely had 15 min I think. Then I knew, I have to overcome this weekness, and I put a separate column for TIME I TOOK TO FINISH in the chart of Mock exams I took , which had MOckName,date,time,#qstns, %Igot , timeItook to finish. I slowly improved on that and finally I tried to finish it within 1 hour and 10 min.
My added advice and a helpful tip is this. We have to get atleast 43 qstns correct Isn't? So you can practice this way also.
JUst write all the qstns nos, in the paper which you think you WILL DEFINTLY GET THE MARK for that qstn , and count the total no of such qstns . When you hit 43 count, you WILL definitly pass. If you get less than 42, now go and look again on other qstns and get another qstn for the SURE FOR CORRECT list. Iterate this process, until you get 44 to 45 in total.
Now we know for sure we can pass, and can be an SCJP. We have to have a margin right? So increse the SURE FOR CORRECT list Number.
This is just an idea to gauge ourself. Give it a try. And my another sicere advice is take 3 atleast 3 tests per day, benchmark the result, and in the gap between the 2 successive tests, discuss your doubts here OR refer to a book or jdk and clear your doubts. If possible for the next 2 weeks make this as your #1 priority task. Visit our new site
www.javaranch.com/mahaanna Go to MockExams and try to do ALL MOCK EXAMS. At the end of 2 to 3 weeks from now you WILL be an SCJP. Now no wasting time.

Come on you have work to do. See you again.
regds
maha anna