Eagle Cast cranks - QA?

I'm assuming you mean 3 and one half thou. That's .0035. Not 35 tenthousanths which is .00035. or 35 thousanths which is .035. Taper is a variation of dimension accross the journal. Each journal is it's own beastie. I have a hard time seeing how it needs the .020 indexing grind. If it was .035" off, offset grinding .020 could fix it but add stroke. But is it was of .035 there would be a HUGE issue with the finish sizing and definately be Eagle's problem. I apologize Mal, I'm having a hard time seeing how it can be of .0035 and need .010 of material cut off any direction. Any chance of posting a pic or diagram of where the issue is?