Good job Norm. Might need to by pass the decomp valve - maybe something like a cmr5h chainsaw plug would fit it - or maybe carbon stuck under it
With the foam filters, I went to clark rubber, bought a 12in x 12in ish piece of off cut - just under 1 inch thick foam. I cut the required size (4-5cm square ryobi filter), cut the foam in half (so only half as thick), coat with bar and chain oil and there you go, a new air filter
