Strike rate is so rare this early on in the season.
the closest i came in a cup accumulator was 2 years ago fa cup round 3. Everything was coming through including a blackburn sunderland draw and Burnely scored agaisnt West Brom or the other way round and that was the one match that cost me the chance of winning 15k.
I did it again last season and only 6 teams out of 15 came through. It really is a minefield.