Delay when starting car after repair

I just had by dual clutch replaced and the car changes gears beautifully. However, once the mechanic put everything back together, the car wouldn’t start at all. When he turned the key the lights came on but the engine didn’t even try to turn over. He checked all the connections and everything he had worked on but didn’t find any issues. He said that this car was known for grounding issues so he decided to replace all the wires to the battery and the transmission and possibly something else at no cost to me. This fixed the issue and the car started right up! But, once I got the car home I found that now it wouldn’t start with the first turn of the key, you have to turn it again. Once it starts you can turn it off and restart with no problem. I brought it back to the shop and he said he thought that the TCM and PCM were not communicating properly and there was an adjustment which he made using a diagnostic tool. He said that the car has to be in park to start and it wasn’t getting that message. He thought that fixed the issue. I get the car back home and it still takes two turns of the key to start, and now it seems to be a weaker start when it turns over. Any idea what could be wrong?