Building a custom shift knob for a project and I need to fill a fairly large annular space with rubber to absorb vibration through shifter. Need it to be soft rubber when cured not like polyurethane. RTV would work great but would take a lifetime to dry throughout the whole mass (if it would ever cure in the middle). Tried expandable foam....didn't like it at all.

was pulled from my car in working condition. 25 plus shipping   http://i223.photobucket.com/albums/dd23/19cturbo/Parts%20For%20Sale/4F19D2FB-0150-4730-B999-85C78A457F07-15602-00000A17BE4AE54A_zps81a66cdb.jpg

stock crank pulley   30 shipped   http://i223.photobucket.com/albums/dd23/19cturbo/Parts%20For%20Sale/06268FC5-BCDC-46AC-BBED-1315D9B02902-15602-00000A17B817BBAF_zps5ab112a4.jpg

I had this done by a machine shop, the EDIS wheel is just a slight bit off center, easily fixed, just drill slightly larger holes in the EDIS wheel and adjust it... You could actually probably run it and be fine, It was more centered than the Mookeeh one i bought..   60 50 shipped   http://i223.photobucket.com/albums/dd23/19cturbo/Parts%20For%20Sale/91573E62-8184-407F-B97B-CD4D40259F13-15602-00000A179A5019DF_zps64e0e55f.jpg   http://i223.photobucket.com/albums/dd23/19cturbo/Parts%20For%20Sale/BB