String tension should be an almost constant factor, as in the tension required to keep the strings in tune is constant given a specific tuning. The scale length between the nut and the bridge determine the force required.
Wow! Stephen Hawking does play guitar.
Makes no sense.
Adjusting the tremolo strings will either lift or lower the bridge up or down a bit, which determines how high the strings are above the fretboard and how much force you need to use to push them on the fretboard (the action). High action will reduce fret buzz, which is what you want, but increases force required to push the strings down.
Adjusting the springs does NOT change bridge height. It changes the angle of the saddles in relation to the body. I suppose you could say that it raises the STRING height, but not the bridge height.
I assume you tried a different set of strings already as well? There might be just a dud string (even better might be to change string brands once to test). Also maybe as a test, take (a) string(s) with a lower thickness, which will dramatically reduce the tension 9's instead of 10's.
I agree that different string brands make a difference in playability. 10's are going to be harder to bend than 9's which are harder to bend than 8's, etc.
However, another much more important question is : is the buzz is only occurring at this particular point? If so I wonder if the frets, Eb has a small dent (wear at this point) or E is a bit lifted / higher (has an imperfection) at this point? Then this will cause the buzz an then some more serious repair (fret levelling) is required.
I doubt a complete fret level is needed. My guess is a high fret that can be easily taken care of without getting into a shload of un-needed repairs.
I had a guitar that did this to me. After a week of funking with it, I swapped out the trem springs with some really old ones I had laying around. Turns out that not all trem springs have the same tension. Once I found a set that worked, it cured my bending problem. Here's a test you can do to see if you have tight springs.
1. Set your guitar up with your favorite strings tuned to your favorite tuning.
2. Get your neck relief, trem angle & action set to your liking.
3. Get everything worked in by playing the shyte out of it for about 2 hours.
Now for the test....the first 3 steps were for fun...
4. Hit the open G string and flick the trem bar backwards and listen to the warble.
Short/No warble = tight springs
Long warble = loose springs
I buy used trem springs as much as I can. Have about a dozen of them at any given time.