Timing needs adjusting, i had opposite problem. Best setup on a dyno. Adjust the L setting to adjust the loading required to change gear it's probably set too high. Some work out of the box some don't. Standard setting says 22 try less
New lump in and all is good. Excellent work by Phillip Crowey at Crowe Performance can't recommend him highly enough chaps. Used best bits from both engines to make a good un. Next run out Dubai with Redline in March, can't wait :)