Join Date: Apr 2006
Thanked 160 Times in 157 Posts
Rep Power: 12
"Change one...change them all... "
If you aren't sure what counts as a crack, go to any auto parts supply and buy some dye check, used for inspecting metal parts. Clean the part, apply the dye, wipe off, apply the "developer" and you should be able to see dye in any cracks. Hardest part of it is finding the dye--but any real machine shop or auto repair supply will have it.