Get a CW Touch Keyer and all that sort of problems are history.
That is right, BUT by using a vibroplex you keep the feeling the historian telegraphers experienced alive, and you keep history alive, just like the way you do by keeping the sigs in the air with your appliance.
It is just like grounding a tree with an axe and lots of sweat, OR in your proposal: with a gasoline powered chain saw in 2 minutes.
Did you think about other possibilities, not showing modifications visible to the outside world, like:
1. Narrowing the dash yoke in a vice (I shouldn't do that) or
2 Putting brass washers open on one side with a width equal to the Yoke ax diameter, in that case you can even adjust the height of the adjustment, with the goal to align the dash contacts on the same height.
Sorry for the bad use of your language.