sheamuz wrote:Will an upper cowl from a 150sp fit on the MC21 SE? Also does standard auto body filler work ok for reparing slight cracks in fairings or is there a better product out there. thanks for any help

If the crack is just on the surface and not all the way through you can use plastic bumper flexible repair filler like USC Thin Ice. Not sure if you have that brand in Australia but there will be something similiar. Do not use standard body filler as it will crack over time.

If the crack is all the way through then it must be repaired from the back either by plastic welding or epoxy first before adding any type of filler to the front.