I'm in the market for an APV to get my wife. She has tiny hands so an 18350 mod is a must. The Mvari from MVS has caught my eye, but it has an amp limit of 2.5 amps. I'm not looking to get crazy, I just want to upgrade to 3.5-4 amps if possible. Does anyone have any experience with this board? Am I going to overload the circuitry if I go to 4 amps? Is it a quick easy change? Like un-solder the old one and solder in a new fuse? I'm an industrial electrician and the lack of technical data on vape products throws me for a look.