Turbo Rx-1 race sled issues

We have a turbo'd Rx-1. It was originally a drag race sled but being that there are very few drag races around our area, we primarily do radar runs (660ft-1000ft). Motor is still a 1000cc and is still carborated. The turbo we are running is a Garrett GT3071 running into an Air to Air inter-cooler. The sled has only been out to two races in the past 4 years or so. So it has done a lot of sitting. Anyways, short story long, I compared the RacePac data we took this year in January and compared it to our fastest run in 2009 and noticed that our fuel pressure went from 24.5 psi to 58-59 psi. Doing a lot of reading and math, I've learned that we are pushing our turbo into the "choke" area of the turbo map for our turbo. We are running 36-38 psi which we will be turning back down to 30 psi for our next race hoping the sled will actually make more power. What I'm wondering is if increasing our boost to 36 Psi would exponentially increase our fuel pressure that much. Our Air/Fuel ratio was all over the board and the sled never cleaned out for any of the 3 passes we made this year. It was farting and popping down the whole track and we were only able to get to 152.4 MPH. We are going to be pressure testing the plumbing to see if we have any boost leaks. I'm just trying to get some new ideas on what some others may have on what to look for in figuring out why the fuel pressure is so high and why the air/fuel was all over. Anyways, I feel like this post is all over the place which I apologize, I've been awake for far to long by now. I'll post below some of the data I have from our best pass in 2009 and our 3 most recent passes this past January. Also, for fuel, we are running VP Import.

Best Pass in March 2009 in 1000ft was 161.79 MPH
-Engine Rpm: 11,300 after full boost, dropping to 10,900 at 1000ft
-Boost Psi: 30 Psi
-Air/Fuel Ratio: 12.1:1
-Fuel Pressure: 24.5 Psi

Most Recent Passes January 2015, best in 1000ft was 152.4 MPH
Pass #1
-Engine Rpm: 10,750 after full boost, dropping to 10,500 at 1000ft
-Boost Psi: 35 Psi, increasing to 38 Psi at 1000ft
-Air/Fuel Ratio: 10.4:1
-Fuel Pressure: 58 Psi-59 Psi

Pass #2
-Engine Rpm: 10,500 after full boost, increasing to 10,800 at 1000ft
-Boost Psi: 36 Psi
-Air/Fuel Ratio: 13.0:1 after full boost, lowering to 12.6:1 at 1000ft
-Fuel Pressure: 59 Psi-58 Psi

Pass #3
-Engine Rpm: 11,000 after full boost, lowering to 10,600 at 1000ft
-Boost Psi: 36 Psi
-Air/Fuel Ratio: 12.2:1
-Fuel Pressure: 59 Psi