Never ever run LRP fuels in a 2 stroke trials bike!...........the potassium used in these fuels has been known to damage crank seals! Here in the UK we can get super unleaded fuels, and this in combination with sometimes increasing size of the pilot jet slightly, often gets rid of any knocking ...

Here in the muddy old UK, most people use IRCs..............also seem to last longer than other tyres, and are a little cheaper!

Chris