80e slams in to reverse

TYTILIDIE

METH HEAD
Yeah, its pretty obnoxious, sometimes the tires chirp. Can we adjust the line pressure through the ECM to correct this or is something else going on? When I installed the HD2 kit, it said to leave some check balls out, one of them when I looked at the ATSG manual was something for reverse, could this be the issue? I got my 9.5" converter back yesterday and need to take the trans out one more time so that would be a good time to install the check ball if I need to.
 
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