Regarding the Larrington, I have not received any feedback indicating issues with it failing to load in game. Please ensure you download fresh copies of each trailer and place them into your mod folder. If the issue persists, check your in-game log, as there may be another mod causing a conflict.
As for the McHale, I understand your request and began work last night on the required modifications to allow the baler to accept 150 bales. I have decided to completely rebuild the baler from scratch, as this will also allow me to include the larger bale size.