So about 2 weeks ago I purchased a Vamo V5 and the first day I used it I was in love. It worked well and did the trick for me with my Aspire nautilus. Unfortunately I had to go back to my ego batteries as of yesterday because the (+) button started sticking down and now it raises my wattage at random times and automatically shuts off on occasion. I attempted to remove the top cap that is supposedly press fit into it so I could adjust the button but have had no luck. Rather than having to deal with this piece of crap I decided I'm just going to ask if there is a more durable and reliable electronic variable wattage mod out there? Let me know what you guys and gals suggest for me to try next?