2010 ve v6 p008 & p0017 after engine swap and timing chain replacement

[Harry03]

So I’ve got a 2010 ve v6 Ute that’s got the 3.6l llt engine in it and recently blew the engine. Went n got a 2nd hand llt n swapped engines over and was getting p0008 and p0017 so took the chains n guides off old motor since they were pre much still new, checked the timing was right numerous times but still getting the same codes. Wondering if anyone else has experienced a similar issue and if there’s any possible solutions to try? Thank you