I have a 95 sidekick 16 valve that I just put a new head gasket in. It runs okay, but it seems to be a little powerless I think it has low compression. when the rpm is about 1000-2500 it seems to sputter a little, but under heavy acceleration and high rpm's I don't notice it. could this be trimming or TPS problems? also I think the kick down cable for the auto trans. needs to be adjusted because it shifts a little hard sometimes and doesn't down shift very fast. How is the cable supposed to be adjusted?