Jeff, one of the best modifications you can do to your machine is to add a multi-position adapter. Normally the machine has one operate mode, this adapter makes it function more like the pullmax with different depths without having to adjust the jack screw.
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If you look through my youtube page (link below), there are several videos on Lennox setup in different configurations, may help to get your wheels turning.. I started out with a Lennox TE150 and more recently traded up to a TE250. Very versatile machines.