New bearings, difficult to rotate the crankshaft.
I used to have buddies show up "to help me" which meant they stood around and talked and drank beer while I worked on my car.One night I was installing a 4 speed and my friend showed up and started chatting.I bolted the flywheel,clutch pressure plate and bellhousing up then slid the trans in,bolted the shifter on and all the linkages,and when I went to install the clutch linkage I realised there was no throw out bearing.I laid down my tools and sat there and BS'd the night away because I knew there was no chance in hell I would do it right the second time either.I started locking the door when I needed to do something so I wouldnt get any distractions.