Well, after two small sessions I came up with this...
21.913
46.670
Then I thought that I must have more in me then that and ran a 3rd longer one, but to no avail, I've had 21.62 and such, and a few 46.5x but have not put it all down yet, I'll give it one more go before subing but I'm not dissapointed with this lap.
EDIT: a few more laps more and no impovement, so I'm subing now....👍