Cat twin turbo big loss of power problem help

I'm having problems with my 05 w 900 L x15 cat twin turbos ,no boost won't pull a small hill mt or loaded turbos aren't engagein motor just fully rebuilt 6 months ago front crank seal leaking. Like crazy checked air charge cooler replaced all 4 boots I'm stumped big time anyone had this problem before HELP I'M A EX TECH FULLY CERTIFIED DIESEL CAT CUMMINS DETROIT I'M AT THE END OF MY ROPE

 

Yes I have a boost gauge no boost checked the gauge by putting air to it it works fine . Check engine light works as well no check engine light No ECM codes at All. Checked the bellows at the turbos while running there cold you can touch them bare handed All of them .turbos aren't engaging checked turbo sensors replaced them tested them they have power coming to them ,by blow tube yes excessive steam an oil coming from the by blow

Itube oil is very wet on the ground puddle about the size of a baseball after idling fer a short time bout 30 minutes in a 10 hr break the puddle about the size of a softball WHICH ISN'T CORRECT IN MY BOOK, I WAS TOLD IT'S NORMAL .NOT EVEN.!!!! MHC KENWORTH IN MEMPHIS REBUILT THE ENGINE FULLY PLATINUM PACKAGE NEW HEAD BORED OUT NEW INJECTORS SLEEVES PISTONS RINGS EVERYTHING NEW BOTH TURBO ASSEMBLYS AS WELL WHICH TO ME THEY DON'T THINKIN L NEW OR LOOK LIKE THEY WERE REPLACED JUST 6 MONTHS AGO

 

I'M Thinking cracked cranck shaft or cracked cam shaft,because crank. shaft seal is leaking really good an it's crank case oil not oil pan oil crank case oil comes out light like new clean oil plus I've never had a Front crank case seal leaking at 6 months after being replaced like there isnt full compression coming to. The top of the head plus my mpg went. From 7.5 to 3.5 -4.3 any advice I'm stumped big time MHC KW. MEMPHIS IS wanting to DYNO it today try to. Find. The root of the problem That's big money please help me out if possible thanks fer your help

 

Bubbanbrenda Thanks fer y'alls help any advice y'all can give feel like I'm getting the run around by MHC Memphis

 

Popcorn 169 they just checked it on the truck air cooler they pressure tested it they didn't take it off too check It checked out the whole motor not internally yet .checked the clamps at the turbos no leaks .the bellows are cold at the turbos not even hot like they should be .an no water or antifreeze coming from the reservoir over flow the head new the motor just rebuilt 6 months ago everything is new no reman parts used in the rebuild at least that's what MHC memphis KW is telling me Whatcha think popcorn? Any more advice what.it could be I'm great full for any help I can get thank you popcorn 169

 

t Superhauler, no boost at All even put a 46,000 lbs paper load on it drove it around no boost what so ever y'all know as well as I do Windows up or down your going to hear those twin turbos I hear nada it's been to KW Memphis 4 Times fer the same problem and even the shop at the company I'm leasted to at JNJ EXPRESS 3 TIMES they can't figure it out either but the JNJ shop said it's gotta be in the head no compression hardly at all .checked the over flow no leaks checked air.charge cooler pressure tested it on the truck not off ,no leaks, oil leaks at the bottom not by the sensor by the crank shaft Superhauler I'm stumped big time Whatcha thinkin it could be ?????