Hi Ron,
It’s a 48 gmc fc-100 and it’s got a 228 with a 3 on the tree. After 2 shops failed to even remotely slow down the leak, actually it got worse I did take a stab at it. Unfortunately I was not able to do any better. I’m not giving up but this has been a ongoing issue that has gotten progressively worse with no end in site, I really just want to drive my truck and enjoy it. So hopefully there’s someone out there with the knowledge to fix it.