PB washers & dodo question

[DaveH]

I did the bob tail mod on my dodo, and also found after some use that the lock piston was getting caught, so I did the emery paper, remove burs on the track and piston thing.

Now I'm thinking I'd like to get rid of the scush schush when opening and I'd like to put in PB washers. Does anyone know offhand the ID of the pivot washer on the Dodo? And what thickness should I order? I can guess, but all I have is a ruler to measure with.

Thanks,