Is there good stuff deep in the tails?

[Pyruvate]

Air still, run with a copper mesh 'boiling chip' in the pot, and as much copper as I can get in the basket, with a controller to keep takeoff In my spirit run around 50 mls every 10 minutes, collected in 40 ml fractions.

All barley/malt, fermented on grain. My last batch I got right at 1 gallon of low wines after stripping, right at 35% ABV. This gave me about 400 - 440 ml of hearts, coming off from just over 80% ABV, down to just over 70%.

Early tails are clearly nasty. It's a nastiness that sticks to your tongue and nose In a vaguely nauseating way, at least for me. So once I thought I was into tails I collected another couple 40 ml fractions to be sure, and then turned the still up and collected the remainder of the tails in a larger jar, down to about 30% ABV coming off the still.

But here's my question. I thought I noticed the smell changing as the tails were coming off, and took a taste, and it wasn't bad. It seems like maybe there's a period in early tails when it's got that real nastiness, but then maybe that can clear up later and the deeper tails might have some interesting pleasant stuff? They did have a bit of a thicker oily feel to them, so there's clearly fusel oils in there too.

My hearts are going to be about 75% ABV once I've combined the fractions, so I'll have to dilute those down anyway. Would it make sense to keep collecting fractions through the tails, get through that nasty stuff, and use some of those pleasant and interesting later tails fractions instead of water to proof my heart's down? Are the fusel oils a problem if I do that?