Option to change the Cowling Support Tool Standoff Collar to a different length.
 
Standoff Collar for Cowling Support Tool.   Determine the flywheel-to-spinner distance, subtract the desired spinner-to-cowling gap, and use that measurement to determine the standoff collar length.
 
(Flywheel-to-spinner dimension) - (desired spinner-to-cowling gap) = Standoff Collar length