Advanced Insertion Transport Pipe losing items when placed beside engine

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Related to Issue 26

What steps will reproduce the problem?
1. Place a advanced insertion pipe as a T junction beside a macerator(input, 
output to macerator, overflow)
2. Place a redstone engine beside the advanced insertion pipe
3. Feed 100 blocks ore into the advanced insertion pipe

What is the expected output? What do you see instead?
Ore should be fed into the macerator until it is full then additional ore 
should continue on and through the overflow pipe resulting in ~36 ore leaving 
the system

Instead the first 64 ore will disappear( Possibly being placed into the 
redstone engine?) the remaining 36 will be placed in the macerator.

What version are you using?
I'm using the Tekkit server so cant be sure of what version they are using but 
the jars are named:
[1]industrialcraft2-1.43b-cb1597-r2.jar
[3]additionalpipes-31.4-1597

So IC 1.43 and AP rev. 31

Original issue reported on code.google.com by laurence...@gmail.com on 8 Jan 2012 at 4:14

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Sorry I gave the version of IC instead of Buildcraft
[1]buildcraft-2.2.11-b1.0.1R1

Original comment by laurence...@gmail.com on 8 Jan 2012 at 5:02

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Appears to only happen with some types of block.
In my limited tests of a few types, Iron Ore always lost some, but Copper Ore 
did not.

Original comment by ericthepenguin@googlemail.com on 7 Apr 2012 at 4:28