Cm2250 vgt Turbo actuator problem

[CumminsFreak]

First of all I would like to welcome everyone on here and thank you for letting me join this forum. The problem I am trying to figure out is with my 2012 Kenworth T660 with Cummins isx cm2250 engine, I've been having some issues with low boost and constant power derate on my truck - Truck would no go over 20psi and keeps throwing the 0125 ( Intake manifold 1 pressure ) and 3135 ( aftertreatment 1 diesel particulate filter outlet pressure ) fault code ( New intake manifold pressure/temperature sensors has been installed yesterday ). I decided to check my VGT turbo actuator and turbo, Turbo seems to be fine ( Checked everything like Rawze did on his youtube vid ) but I can't do the Installation of the vgt in insite - blue bar keeps loading in insite but wont fail or pass the vgt install. Any, even smallest help will be greatly appreciated. Thank you!