upper end of print

[R2D2Rodriguez]

on several occasion during the end of my print it seems like its not bounding together , stringy and its all nasty.
on the same print the lower section is awesome , solid , no extra string and details are exact.
Can anyone share some light as to why this is happening ? I am restraining my self from printing big detail items.

Thanks guys and special thanks to the guys that help me with my previous issue.

[S3D-Alex]

Could you post some pictures of the issue you are describing here?

[dkightley]

.....and a Factory File will also help.

[R2D2Rodriguez]

here is one picture of my print, thanks guys for your input.
I am making this small Toyota engine for a friend . hoping to get it done by fathers day