Last night I started the tractor and quickly unloaded and parked it a few feet away where I wanted the loader, raising the loader before shutting it down. Got the loader all disconnected, lowered it onto it's feet, then started the tractor for a few seconds to lift it free of it's connections. Started it again and turned it around, then shut it down and removed the brush hog. Started it one more time and drove it into the garage. Each run was less than 30 seconds and the engine block wasn't even warm to the touch when I was done.
I removed the front guard, and hood and now have easy access.
When re-reading an older thread on this issue, I noticed a link I had missed before showing a new Kubota radiator for $430 from a dealership in Penn, so I ordered it and got confirmation that it's available and will be shipped in a few days. Not sure why their prices is 100 less than other dealers.
I found a 3 part video on YT showing radiator removal and repair with epoxy. It wasn't exactly the same issue but similar. It was long and boring, but it's going to save me a lot of time knowing how to get the radiator out.
Meanwhile, I'll have some time to add work lights to the canopy (those cheap 18w LED work lights on Ebay are awesome), make a box to hold a bigger tool box on the ROP, and maybe a chainsaw holder as well.
On the shields, it looks like there isn't much front tire clearance when turning to allow a shield to be added.