Ironically, we've spent the past couple days of this past week adding 2 rings to a 15 yrs old GSI. It was 8r, we made it 10r. Doing that called for extra floor supports & stiffeners. So, we had to remove the old floor totally & put it back in w/more supports. There is a "trick" to popping out the old supports. The newly added supports are identical.

On Monday we'll start doing same to another GSI. It's a couple yrs newer.

The new Brock floor supports look interesting. I believe they switched to them the year after we built the bin in the earlier photo I posted.

The following photos were taken on 8/15/08 inside the 15 yr old bin.