Out of the 3 heavies I have they all weigh under 100Kg. this is OK I have fought many machines that weighed between 90Kg and over 110Kg in the live events as many people put Hardox panels on for shows and replace these with aluminium or similar for the comps.
Only in the championships have I seen the weight limit enforced, I don't care what people do with weight at the moment I'm happy to just run my robots at 100Kg and let the rest make up their mind I do remember one team's robot being weighed at over 130Kg didn't bother me.
I'm sure there is no conspiracy or plan to sabotage anything, build to 100Kg as I get older I can tell you gaining weight is easy loosing not so easy!