done it today, 100% just some money, not much, and gaps, done a few levels already
tip for manualing the switch backs, if u turn round real quick, just up 1/4 pipe, gets some spped, manual, then half way ropund corner u can stop, then re start ur manul, should say round firsy corner, this way it slows u down, and can turn next corner easier... have to do it quick though, cos its the straights, not the corners u have to manul, but have to manula round last corner, cos of the time