Im having some problems with my transmission shifting and slipping. under full throttle it rev's to 2800rpm and hangs there for a while before it will finally shift from 2nd to 3rd and 3rd to od. Under normal use i have to let it warm up for a long time or it wont shift and just feels like garbage. Once its warm its much better and some times perfect. but shifts late and sometimes when i take off feels like its slipping until I let off and get back on the gas. I tried adjusting the cable but just moving it one notch made it just about skip 1st gear altogether. I was told the transmission was just flushed and serviced before I bought it about a month ago. Its a 95 4x4 93000mi #8 plate and exhaust