MRP Question

I tried to ask this question the other day but didn't explain myself in
the correct terms so I'm trying it again. Whether it's right or wrong
this is how we run our MRP. We copy the customer orders from ECL to a
temporary library called MRPTEMP that we use to run MRP. All other files
in the temporary library are blank. We do this because all we want out
of the MRP system is a breakdown of the BOM and tell us what we will
need to make the units for the orders in the temp library. 

 

For some reason we are getting some items that are not planning enough
and some that are planning too much. When I check the BOM it looks
correct. The items in question are "bulk" items that have order policy
"G." 

 

Like I mentioned before I am fairly new to BPCS and how the MRP works.
If I wanted all the items to plan exactly what we need for the orders
and no more and no less how should I have the items setup in the CICL01
file or IIML01 file.

 

Thanks,

Daniel