Hopefully I will get a chance today to do this (I should have a chance). If I do, I will try all kinds of things (obviously more than likely under .98) and will give results. Right now I am dealing with a shot IMRC

, so my car is not the best to check this with

right now.
Anyway, like I said, more than likely the voltage you will want to go for is .98. You don't want to go any above that because either (depending on the car) at .99 or 1V, the car goes into different fuel tables assuming that you are "driving" it. In all of the cars that I have done this on, this voltage range is the same or close to the same and I have dealt with different brands and types of vehicles. You won't have to drill such large holes that the screw heads will go through the sensor, you don't need to worry about that, sometimes you will have to drill a considerable ammount out, but you can also ovalize the holes as opposed to drilling them larger once the metal ring is out. Trust me, you won't have to go so far as to drill the hole the same size as the screw head.
Good luck to you and hopefully I can get my car taken care of today, and the damn IMRC taken care of too!!!