Need some help.

[BlackGNTURBO]

I have a Gn since Oct. and when I got it the tranny was in lock up. No power till rpms got up. Well I went to a tranny shop an hour away Because a friend told me this guy was great. So I went. He put in a 10.5 pro torque HD converter HD clutches, Art Carr shift kit, hardened pump rings, 10 vane rotor. Let me say It shifts Great UNTILL IT GOES INTO OVERDRIVE..... Once it goes in overdrive it seems as if it goes into over drive then 2 seconds later It FEELS as if it goes in to another gear. But Theres NO POWER.... I dont know much about trannys But a guy I know who knows Turbo regals said I need a custom performance chip from turbotweak.com. I spoke to the guy who fixed my tranny and he said when he drove it it was perfect. He then told me to have that guy who drove it to call him. Ever since I drove it on the highway it did this. Can anyone help..

Oh I dont know if this matters but One cyl has 10 pds of compression. I Dont know if this would effect My issue. But Thank you to all who can offer some help... Thanks.. My email--- Blackgnturbo@aol.com
Rich