Right approach for meshing
 

Hi all,
I am totally new to ICEM
For last some days I am trying to mesh different geometries.
Uploaded is a geometry imported in step format
I tried a lot but not getting quality mesh(>0.3)
Also when checking mesh lot of elements are problematic which I move into subset (I dont know what to do with this subset as they remain unfixed)
I tried diff. combinations of methods and sequences
Can u please tell me which is the right approach for this geometry
Any help is appreciated
if somebody expert can do this in lesser time,please reply by email
my email id : hhs999@gmail.com
Thanks

post tin file atleast
 

please post tin file