Maytag dryer with low heat

I have replaced the coils, the cycling thermostat, the high limit thermostat, the flame sensor, and yet the heat still seems low. It seems to me to be taking too long to dry. Up until about 6 mos ago it was hooked up to a vent run that was waaay too long, and who knows how clogged with lint. We moved, and now the vent run is right, and clear from the blower wheel to the outside. My timer also does not advance in auto mode, but advances fine in timed mode. The only things I haven't changed out are the heat switch, the timer, and the fuse of which I only see one, and it tested fine. Does anyone have any suggestions?

Thank You, Stephanie

LDG9206AAE