[Jake Raby]

Sounds like you didn't have the engine locked at TDC #1 cylinder... if you did not the cam timing MUST be re-set because it has been compromised. This is the first procedure that must be done, but no one seems to listen to that.

Its not as simple as putting the engine back at TDC, locking it and going back together with it.

If the IMS tube shifts, there is a reason, some camshaft is "on lobe" and is exerting force on the IMS tube, EVEN WITH THE TENSIONERS REMOVED!

Tensioners are marked per position with rings that match the casting rings that are embossed on the heads.

This procedure must be carried out explicitly with great attention to detail, you can't just pull things apart and expect the process to go smoothly on reassembly.