I'm new to tuning, but picking it up quick. I recently swapped an LS6 cammed LQ4 (6.0L) into my 2004 Yukon. It has a K&N CAI, and gutted cats. This replaced the worn out 5.3L. I had a local shop tune it, and we found out that my IDC was over 100% at 5000rpm. I upgraded to the 8.1L injectors today because they were a direct swap, and 42lb instead of the stock 24lb. The shop retuned it, and was able to get a lot closer. I am having an off-idle stumble problem. Anyone mind looking over this tune and making recommendations?