hello all. I recently had a shop rebuild my FC-150 trans/T-case. it was leaking a lot, and I figure get it professionally done so it right, just for peace of mind. since I got it back (almost a year now) it hasn't leaked a drop. HOWEVER....now its really rough to slide into gears until everything is warmed up, like 5 miles down the road, give or take. once its warmed up it shifts into 1-2-3 just fine. if i push the clutch in, i cant really downshift until the RPMS are matching, otherwise it grinds. what causes this, and how do i fix this?