Honestly, I have been busy (mostly with CAP server stuff, trolls x_x), but I should be able to do at least a little more work here in a while.
One thing that has been concerning me is how much the delay between seed creation and the final button press is. I don't know if Flovv or anyone has set that amount down to a number, but if the seed clock keeps running during that interval, all of the results will be off. It's bound to be a constant, however, so if we can find that value and plug it into the formulas we already have, then things should become more accurate; this is the reason I'm not surprised you haven't been having any success :/
If you want to help me on this basically all you have to do is just keep doing what you're doing, but just record what your target is and what seeds you actually hit. If we can compile a working data list with this information, I probably will be able to come up with the constant so our attempts become more accurate :)