zzzcoupe

So i recently had my clutch and flywheel replaced and was having issues with the power not feeling right my cel light has been on for a few month from a minor exhaust leak so i didnt notice if my cel threw new codes since the replacment just to be sure i checked today with ODB2 sure enough, p0021 and p0011 bank 1 and bank2 intake camshaft timing overadvanced. came up is this the culprit for the power just not being all there and is this something the transmission shop did and should fix or is this common when replacing with light wieght flywheel? ( if so not happy)