UA keeps spamming

1st let me start by saying I am very grateful for the macros that you all take time out your busy lives to make and place on this site. Now that thats out of the way…I have tried every macro listed so far in the affliction section and they all have the same issue for me. The macro will run fine for a few mins then all of a sudden it will cast UA about 5-7 in a row. At the moment my warlock is only lvl 38 and maybe that has something to do with it. I am using a logitec g510 keyboard with programmable macro keys to spam the button at 150ms. Thanks in advance for any help you all may be able to provide.