That's a new one for me
/emoticons/
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I assume the engine is out and about to be installed?
If so, the biggest thing is to make sure the TC is fully seated on the input shaft and that you align the bolts on it properly with the holes on the flywheel while installing the engine.
Also, make sure the TC doesn't slide out ANY while dropping in the engine, otherwise it can and will be a total PITA to get it all together properly.
And easy way to ensure you get the TC bolts in the proper holes on the flywheel is to find all four holes on the flywheel first.
Then put some electrical tape over all the other holes on the engine side of the flywheel.
No way to try the wrong hole that way plus the tape can be removed easily when installing the TC nuts.