I rode an excellent trial down at Shepton Mallet with the Blacmore vale motorcycle club. It was held in a scalpings quarry and was a real test , although to be fair i only dropped 24 on the route one down from the elite route. There was no way i could have ridden the harder route. A s a comparison national rider Kevin Nolan who i traveled down with dropped 8 marks on his fancy SWM.
So ive come home from the trial and checked the air filter which was spotless and didnt need cleaning. On a wet day there's no dust so there's very little contamination
Sooo i was looking very carefully.
One problem the JTg is prone to is that the radiator gets the spray from the front wheel . This means it can quickly clog with mud. This showed itself at the Blackmore vale trial when my fadiator became clogged after 2 laps with sticky red mud.
We'll see how it goes.