I have a tugboat mod and dodge v2 and get a real bad hot fire button and sometimes sparks real bad . I have cleaned it and pollish copper contact and sanded down burn marks firing button nothing helps It matter what build i put on it
I used to have a mod that would spark and stuff every once in a while and also shock me sometimes. I threw it away and bought a limitless mod and have been very happy with it. The manhattan's and the praxis mods are also very good IMO.
The Tugboat mod has been known to be a little wonky. I guess just because you can make one of the most highly praised atties on the market doesn't mean your mod will be as good. I will say that you should pitch that thing immediately and keep an eye on any battery that's been in it.
There are so many mods out there that I can't tell you which to get. I'll only say that you can't go wrong with a FUhattan. They're about $40 or $50 bucks and they're workhorses. The tube is really thick, and the entire damn thing is solid copper. I've never had a problem with it.