ERG80 you're in Cookeville correct? I would ask Jimmy Davidson at AAA auto in Livingston. If he can't help he may be able to point you to someone local.
If it’s running bad you can in plug one side of UVCH with it running and if no change in how it runs pretty good chance to be IDM. Yeah they are a pain to mess with and can’t imagine having to do it in the van.
Does yours not have the fuel bowl filter in the valley? That’s the only one mine has. I done away with that stupid shower head looking pickup in my tanks and just ran a piece of fuel line to the bottom.
I finally put a small green zip tie on the Allen wrench that fits those hub bolts so I didn't have to go through all of them anymore. Im proud yours has caliper bolts instead of the dam caliper pins mine have. I thought you were going D60 for the front?