Thanks, if I 'nuke' it ... I'd likely grab a VS dna 40 & call it a day.
I asked protovapor about updating to 40 & the 510 upgrade - the estimate I received was in the neighborhood of 160 bucks !!
Geez, I like the device & all but a VS w / dna 40 is only another 30 bucks ( replaceable battery ! ) & I'd also have the PV unit as another spare.
They made it an easy choice.
The XPV 40D is DNA 40...VS will take forever to get...why not get another Protovapor? The pin on the XPV40D moves, not fixed.