[LeftOverParts]

You are probably fine. When changing the timing belt, pretty common to lock the cam gears together with a tool made for it or even using tie-wraps to loop through the slots in the gear to tie them together. If the gears are turned or bumped a little, the force in any compressed valve springs can turn the cam a quarter turn or so. Another way it could happen if the gears are not locked is when putting the belt on and the mechanic tugs on it during threading and ends up turning the gears. The remedy is usually to turn the gear back into place and start belt install over.

Interesting they told you it went out. IMHO, if this is the same shop that did your heads and didn?t want to diagnose the problem that led to you replace the engine, you might want to find a new shop.