I looked into the same exact scenario one time. Immediately one will see it's a low yield proposition and a definite step in the wrong direction. After looking at the picture quickly I do wonder if somehow just the lever itself was able to be pressed out and then in to a non modified cam shaft.
Even then if I remember correctly one would still have to overcome the difference in the relationship of the o3 plunger to the milling in the shroud vs the rear face of the combined parts.
Some things apparently are not worth the effort if a replacement is available even if your own labor is cheap or really bored.