The new caps went in well. I cleaned the bores well with scotch-bright pads, lubed them with anti-seize (or any anti-galling compound) and pressed them in with a bench vice.
Regarding the removal, I do remember now that there was one or two caps that I had to grab with a bench vice as I just couldn't grip them tight enough to remove with water pump pliers. If necessary, you could use a little heat (light heat with a propane torch, not oxy acetylene) on the yoke to expend the bore to release its grip on the cap, though I didn't have to resort to this.
I assembled the axel, bearings, and housing (upright) together with a hydraulic press. I can't comment on the puller method as I have not tried it.