My 98 Blazer auto climatebcontrol blows hot air only when in the far right temp position. Occasionally hot air will 'leak' outbof the vents. AC compressor has a seal leak and not kicking in normally so I know that is part of the ac issue. I did replace the blend door actuator even though the gears looked ok when I opened it up. Need a heat solution before fix thr ac. Advice greatly appreciated.