They may have, they did 350 & 355 during BUB in early Sept..
To set a record,
you have to exceed by 1% the existing record, with 2 runs, one each way.. averaged out.
BTW
Jon Amos, last week ran a 272mph one way, was the fastest situp bike ever, but he blew up on the backup run..Kawi , I think 1000cc or 1100cc!
Probably 3 or 4 years a go Wheeler with EZ Hook , single engine Kawi, ran a 355, but failed to back it up!.. the record back then was 340ish and the last 2 record holders are all running twin motors, or at least 2x the displacement of Wheelers machine..