poly cab and core support mounts...I'm stumped!

[In The Ten Ring]

Your radiator core support is sitting on the two new rubber bushings, right?

These trucks have many variables when it comes to lining body panels up. I had to open up a couple of holes in the core support and grill brackets with a die grinder and still I have the passenger side outer fender dipping down a bit. I have decided to let that go for now and maybe let a body shop fix that. My attempts to get an experienced forum member to come to my house to help me do this all came to naught.