The MVP's only problem is the inconsistent depth of the well the pin sits inside of..it seems to range a good bit from batch to batch. Mine, I had to always mess with carto pins to get them to make contact, but my friend never seems to have to do that.
If you have issues with making contact with things, try to adjust the pin on the atomizer first, but the youde atomizers mostly have sealed pins that won't budge. So you'll have to get a small flathead screwdriver and gently pull up on the MVP's pin. Just put the screwdriver in on the side of the pin, put slight pressure against it, so when you pull up the screwdriver, it slightly moves the pin up. I do that on 3-4 sides of it..I eventually got fed up with it, and I'm glad to have switched to adjustable/floating pins..but I'm glad I had the experience with the MVP. Mine got ran over and still functioned great, with only minor warping on the bottom..but it's not like it was noticeable, cuz the output switch wouldn't let it sit flush, so I didn't even notice that until my friend using it pointed it out.

stellar device..it and the vv are my only recommendations for people that don't want cigalikes.