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I have a 77 f250 I bought for my son in July 2019. I'm replacing the timing chain due to it jumping a cog. The truck came with a double roller chain upgrade. I bought an edlebrock 7821 timing chain kit which matched up with the old chain. When I install it I can't get the cam and crank sprockets to line up front to back. It looks like the crank sprocket isn't fully seated.

Ive cleaned the key and started over numerous times but it continues to not line up.
I can't figure out what I'm missing/doing wrong. I've never had to fight a timing chain like this before. This is the first time ive used an after market chain on a 400 I've always just done stock ones.

This is cutting in to my '52 F1 rebuild!
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