transmission problems 08 job1
 

Hi im new to the site and am having problems with my 08 super duty diesel job1..before installation of sct tune transmission would flare and neutral out.after tune installed transmission worked fine sometimes ..now its going reverse while in neutral and binds up in drive ..will move but pulls out in second on a bind..any idea's? Code po761 came up

It could be the valve body or bad shift solenoid, those will throw the P0761 code

When I looked up the code it was performance sellanoid stuck on..is this something I can fix? can I buy a new part or a new valve body I am Not sure?