The only time I use a strong detergent is when I use Dwn to strip all the wax and start fresh. I then make sure my wash mitts get thoroughly washed and rinsed before the car is washed again. I once made the mistake of not doing that and I nearly washed all the sealant off the paint. I was annoyed, lol.
It's just frustrating when I see my paint bead for a week or two and then see it stick to the paint. Makes me feel like all the effort I put into keeping the paint protected is done for nothing. I live in Florida and the sun isn't at it's hottest just yet, so it's not like the MPL melts off... it's a strong sealant, anyway.
Sometimes I wonder if the chemicals in the V7 conflict with the chemicals in the MPL. Chemical reactions do happen, lol.
I may just stop using the V7, use the pooling water technique to dry and follow up with damp microfiber safely, and if the paint beads like mad, maybe that'll give me an answer. If that's the case, I've used so much V7 that I really can't return it. I like CG products, but I'm not sure if the V7 is working well for me. That or I could try switching to JetSeal 109. As we all know, most company's products tend to work with each other.