[Fluff]

Hi John ,had a bit of a run round last evening ,as you say the car seems  much smoother .My track is painted with acrylic ,so I don't use anything on the tyres except 3 in 1 oil .The initial run was that the car had a lot more grip but the sponge got dirty very quickly , I've not treated the sponge in any way . As the weather seems like it's turning a bit unsettled I will have longer runs and see what happens .

Steve