I’ve had the streak on a 02 £4.80 Grand National. It does seem anything v04 £6 don’t have the same profile, likely due to the enriched period being outlawed.
I’m still going to keep at these and make the line wins free, shame about those forced streaks as it was one of the pitfalls of doing the lines, giving it an element of jeopardy
Still it’s kind of fun to experience the trick on the games we don’t have early software for.
J