I am having a problem threading a 1"-8 2A thread on an Okuma lathe. The code I have right now reads:

G71 X.915 Z-2.35 D.008H.1482 U.005 F1 J8 I-.0010 M33M73


The threads are not being cut deep enough. I believe it has to do with the H value, but I am not familiar at all with coding for an Okuma. Any help would be greatly appreciated. Thanks.