This is how to manipulate a forge map to get extra blocks of a list
___WITHOUT MODDING___AKA FAIR GAME TO POST ON MM___also since its not a mod rewrite there is less lag than a mod if you over abuse it but so fat I have none 
requirenments
2x xbox’s --wireless–
halo reach disc
halo reach downloaded game
and a ethernet cord for a system link
download the halo reach game to both consoles one will have the licenses the other will not
on the console with the license sign on with an alternate account and wait in dashboard for further instructions
now sign your main account that owns all the downloads onto the xbox that came second
both xbox’s must be connected to xbox live
system link with an ethernet cord
with the alt load the game from the disk
go into forge place down all blocks you wanna copy
with BOTH accounts prepare to save as new but dont click the last button selection
turn off router aka unplug
the second xbox will receive a notice to get on live within 8 min as soon as this pops up a third player signs in this one then the main must sign out
wait for the timer as the third player to run out as soon as you see a screen change mash the button that finalizes the save. it starts but doesnt finish saving so dont worry thats what you want.
the main will sign into the first xbox still disconnected from xbox live.
connect your router and wait for it to go active
while still loaded in reach he will pull up the xbox button shortcut and scroll over to quickplay -without leaving the game of reach-.
at the same time as putting the disc in the second xbox.
this will sign him into live while for some reason thinking he is one 2 reach’s or whatever thats all I can think of as to why
once you get the second xbox back on re-load the map all your blocks will still be there and your actual list is still full as it was from the very start
also deleting the copyed items will not effect you cash or list whatsoever
this being known there is nothing keeping overlimits for getting on mm now 
as it was in halo 3 any maps that were different were still posted glitch or not
though mods weren’t posted at all
so officially be it an overlimit or not there is no way of proving it is or is not as it is possible