We wouldn't be able to do the left, right weight
now. Robert/Frederick? brought the good weigh system to Oregon. We only have the town dump here and they can't weigh right/left.
We too removed the backrest of the front bunk. I did add new foam that fits the front better as that is where I sleep. My foam shouldn't really be more weight
than the original foam/backrest.
Maybe when they rebuilt they made an effort to lower weight with cupboard doors/etc. I am not so obsessive that I need to fuss with that. It is just all interesting. If we had to get our weight down we could I'm sure.
Best thing to learn is that we all need to know the weights of our units and that all 13's are not equal.
Oh! I just thought of something that might add a couple of pounds. We have brakes