I figured out a way to beat the RFS lap WR

its a pretty good strat...
The more you clip at the start,the easier it is to make the SC without a shroom,and if you clip the 2nd snow hill properly,you can still continue the run,and gain speed against your ghost,and land the SC faster,if in right possition,(Make sure not to clip too much at the start in order to make it perfect)...
With a bit of corner luck during the end,I think I could get the WR, but for now I doubt it,32.6 atm

My shroom spot is till the same,only I got a new idea for it.