What's interesting is that a friend that works for an Indy swears that the LN lock is a knock off of the factory tool. He also said that valve spring forces are very low at TDC. And that he has done this procedure a number of times with the slotted locks.
I'm not ringing in personally as i have no idea, just tryin to get as much info as possible, unfortunately some of it's contradictory...
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