Chad,
After selling several of these "combo" Hi Powers, we found that most of the followers should be changed in the factory Browning mags, along with the magazine springs. Kevin at Novaks worked this out. You might try your factory mags to see if they work. We had some that would, some that wouldn't. The other interesting thing is that we tried some MecGar brand mags that seem to work fine without any modifications. Suffice it to say that I carry the pistol with Novak tuned Browning mags, and keep MecGars for range work. The darned Browning .40 mags are getting kind of scarce and expensive.
As far as what else has to be changed in this caliber conversion, consult a good pistolsmith.
Allan
<font size=-1>[ This Message was edited by: Allan Yoast on 2001-07-09 20:25 ]</font>