Trying to print a model with remove holes checked, but still with a few screw holes

[jdenn 0]

I have tried everything, using the support blocker I've tried to override the remove holes settings using infill mesh and cutting mesh. Both ways, so I've had remove holes on the model and an eraser model blocking it in the certain part, and the other way, only having remove holes for the parts that I want. Nothing works, the most I can get is an outline of the hole but the infill of the model goes through it, and even creating another support blocker and making infill percentage go to 0 doesn't work. 

 

What I want is to check remove holes (because it fixes a ton of issues with my messy .stl) but still print with a few holes to be able to screw something in the bottom. Why doesn't the support blocker/eraser thing work? 

e6new.stl

[GregValiant 248]

There are too many errors in the model for it to ever slice correctly.  There are a lot of holes, surfaces facing the wrong way, gaps between surfaces.  Netfabb repair worked on it for 20 minutes and the repair failed.