totally different recognition rate when I rolled back to a previous version of tesseract.

[Jing JC]

I installed tesseract 3.03 and then did an uninstall. 

Since I compile from source and install tesseract to my assigned path, 

I removed the tesseract header files, libs and etc cleanly. 

And I re installed tesseract 3.02.

while the result is not same anymore. 

and unfortunately . 

A lot bad. 

What should I do in this case?

how to get the same result I used to have. 

Thank you in advance.