I've done it both flush, as you have, and mid band.  The one done flush was an original forearm taken from a 92/96 that was savagely broken at the wrist and put onto another 92/96 that looked like the forearm was cut off with a bayonet.  The mid band was a Larry E. Price forearm that would not have been wide enough to do flush on the 98 I put it on.  I had the wood to spare to make up for it, and let him know it was a bit small on the big end, a problem that he must've fixed.