Thanks for the reminder, For most of them I took the carbs off, for a couple, I could not get them off for one reason or another, so I put them in and took the chance. These were all very old motors that needed it so the risk was worth while. I will take them to my LHS and get some help getting the carbs off, then replace the o-rings. Should be ok.

For the good engines I was VERY CAREFUL!