Howdy,
L5 is the latest ROM version. Mine had L2 which is an earlier release. I went with L2 as from research on RGP (which isn't always gospel) said that L2 was a little less buggy than L5.
I believe it is mostly to do with the supercharger anyway.
I wouldn't stress about the divertor opening up early. Mine does this probably 1 out of 4 times give or take. I think it would be level setup for the kickback...Maybe just lower it a bit (ignore whats on the bubble) and find the sweet spot for the machine.
