Originally Posted by
SesameCrunch
I'm a little heavier than you at 86kgs (all muscle, you understand

). So I'm thinking I need a little stiffer setup than the one you found to be perfect. Therefore, I'm thinking that I don't cement the two doorstops together and have them compress independently. Does that make sense to you?
What I would suggest as a 1st experiment is to use 1 doorstop with as big a washer you can find. I lately found that mine was softer perhaps not due to the length increased due to glueing, but due to a smaller washer which I had used. The doorstop therefore had less of its bulk to compress resulting in softer behaviour. With the bigger washer it was stiffer again. The stiffest I got was with 2 stops end-end.
So try the single stop with big washer first as a reference point.