A few weeks ago I got an 89 k1500 short bed 4x4 with a 350 and 5 speed manual. I've been noticing that between gear changes it takes absolutely forever to come down to idle, which makes it difficult to get a smooth shift. It also never fully drops until the truck has come to a complete stop. If I push the clutch in while moving, it will drop to about 1200rpm, then to around 650-700 when the truck comes to a stop. I'm not sure if this is normal as I do not remember my previous manual tbi trucks doing this. I would like to fix this, so what should I be looking for or changing. Thanks.