Hi Norm

The problem is getting into the air filter. The only way to open the face plate to access carby throat is 8-10 tiny phillips screws and remove 2x 10mm carby bolts, then you have to put the 10mm bolts back or the carby floats on the studs away from the intake

To clean the air filter, you have to phisically remove the AF housing from the engines (aisde from breather) and unclip the rear