I am working on the headlights for my 1920 490 touring. The parts books I have do not list the gasket materials. What I found on mine were 1/8" cord that was stuck to the lense and the reflector with a tar-like goo. Then there was a 5/16" rope between the lense and the rim. Was this what was used? Also does anybody make the lense clips that are inside the rim ref. part #24476 or do I need to make my own? Thanks for any input. ok