Well I had a pretty bad stumble at 3800 as you can see from some of my previous threads but thanks to AgentD's advice that problem is gone now. It came down to the actuators being stuck shut so I just removed them. I was kinda hesitant at first thinking the stumble would be there still but with more power top end but im really happy to say the hesitation is completly gone. So cleaning out the ports was the solution for me. Only thing that needs to be tinkered with now is the timing and this 13B should be back, if not ahead of its stock power figures Once again id like to thank AgentD and everyone else who helped me out.