20 sols is such a small amount its barely considered variance, I think you are making much ado about nothing.
This thread was meant to inform others about the drops, but as I mentioned the sols were still declining. I didn't let it go any lower but it's quite probable it would go lower.
Not too sure about 20sols not being a big deal though. Many have switched from EWBF to DSTM for a higher rate and many state they get around 50sols more. There appears to be justification to run it at 2% dev fee for at least 50sols more. A 20sol difference is almost half of that.