Cheers guys, I was hoping no one would notice me stealing this gold for the moment.
To be fair - this is a sub 50.XX level... there is tons of time left to come off it yet.
Hints... don't carry too much speed through the second flag... and you can run right up the left side wall saving 1.5 seconds... don't over-jump across to the top flag (I jumped too far) and make sure you hold on to get the drop onto the slope, like I managed.... For the last flag, try to goo just a bit faster through here, and overshoot the platform with your front wheel - this will kill the slow bounce here, and knock off another second.
I am still a long way off masterring the bottom right corner, but soft and smooth seems to be the way - don't rush, as as soon as you are off the ground, you can't make the leap.
I see where you saved some time, coming down from the platform at the top right. 