" First off you need to adjust your scalar further, it's been a long time since I've played with E50 or anything less than E80 for that matter, so I don't have a number for you, but you can raise it fairly significantly. I'd start with .1 across the board. At idle your long term trims are high, at WOT, your short term trims are high. Get those dialed in and then go from there.
As for pump pressures post WOT...some times they'll stay elevated for a short while but then stabilize back to normal.
Make those changes, log, and then let's see where you're at.
BTW...not all E50's are created equally...so what works for one person may not for another due to a various number of factors. I'm guessing you're ethanol content at your source may be on the higher side...you can test it after you get my kit as they all include a tester.