There is so many more powerful cheap mods out now a days. You could get an istick 30 with a GS Air
tank for under $30, definitely worth it over the head ache. It will satisfy you and is way better then an old MVP. It also would alow you to start using sub ohm tanksbif you'd like to get into that. You might want to try and fix your MVP, but is the headache worth the $30 to get a far superior product.
I'm not 1 to recommend gear to people but this seems like it would be perfect for you. I'm broke, but even to me that $30 saved me $20 in a week of buying it.
More power to you if you can fix your rig and are happy with it, just a suggestion buddy. It's all up to you.