In just the past few months, I ordered spring bushing from PST and there was a weird "special" bushing size for 73 leaf spring eye, as it turned out. They sent me different bushings 3 times without any charge, and in the end I sent them back again and got ones for my new springs that were made to 81-87 specs. They were VERY understanding and helpful. I will still recommend them.
Sorry you had such trouble with them.
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Chris Lucas
1973 Chevy C-10
1975 Chevy Silverado
Captkaos' Page
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Chris Lucas
1973 Chevy C-10
1978 GMC Jimmy (2WD) - SOLD
1987 R10 twin turbo LS
1991 R3500 SRW CrewCab
1985 K5 diesel swapped project
1989 K5 2WD conversion w/ Vette susp Project
Captkaos Customs
73-87chevytrucks.com