I think I have the same issue as you. My cap seems to only want to click once. Occasionally twice by I can’t seem to get it consistent. I’m very familiar with dynas and Vapman but can’t seem to get consistency with the Anvil.^^
I wonder if something's off with my unit, then. I've been using the WPA for almost a week now, and have yet to hear a 2nd click.
I just tested, and after the 1st click, I waited almost 10 seconds with heat applied and still didn't hear the 2nd click.
I removed the heat and started inhaling, and got combustion. Time to clean.
Hope everyone had a good holiday!
I do low and slow on the dyna cap and get it chocolate brown but my anvil is consistently lighter. Any advice?