Hey....I recognize that o-ring chart
I thought I had posted all of that stuff on here too. I'll have to fix that oversight.
Anyway, I'm sure the OP probably already moved on but just a FYI for anyone that may come across this.....in order to figure out the o-ring sizes for DP markers, you'll need the schematic and the parts list. The schematic will number the o-ring. Then you have to look up that number on the parts list to get the size. For the E1 bolt, the schematic has o-rings #4, #5, and #6. On the parts list, those correspond to a 15.8mm ID X 1.9mm CS, a 14mm ID X 1.78mm CS, and a 13.8mm ID X 1.9mm CS o-rings. The other chart, when downloaded and printed properly, will give you a 1:1 true size of the o-rings for comparison.