I have a 72 Cl175 that I am rebuilding the motor on. Im trying to reinstall the crank and the transmission. I have all the downs but cant get anything to seat correctly. I have the 4 dowels with holes all the way threw for the crank. but I notice that the two inner downs dont seat down as far. Im having issuesing getting the crank to seat. So I swapped the downs from the trans to the crank and it works perfect. But now the trans doesnt seat fully WTF am I doing wrong???