So, I have some heartburn with this last paragraph. There are a few of us who like to build... everything. I wanted to build my tanks because I will have greater confidence in them. Because I have seen a lot of water damaged fuel tanks over the years I will be acid etching and alodining my tank parts since there is no other way to protect them. Because I actually enjoy working with polysulfide sealants, doing it well is very gratifying. I was also in favor of this option because Vans said they were including the sealant in the slow-build kit. Since we only save $500 by slow building this is almost wiped out by now having to buy the sealant. So for those of us going down this rabbit hole this policy change becomes a bait and switch when they unilaterally apply it. As well, the excuse given that it is a perishable product is also disingenuous because I'm am certain the first thing I will do after inventory will be to build the wing tanks, which will happen long before the sealant expires, assuming it arrives with some reasonable life span left.
My recommendation as the ethical thing to do, is to honor the deal they made for those of us in the queue before this policy change. Anyone buying into the slow build option after yesterday will be effected by the new policy and will know that going into it.