Any Words of Wisdom?

If any of you saw my post about my slide.....

Sooooo this is what happened!!

The reason this happened is the seal on the motor side somehow got stuck to the caulking on the slide, no idea why this would happen! So the motor side was stuck when I attempted to extend the slide not knowing it was stuck but then it broke free and the slide extended out.

So I think.....it is the motor side that jumped 3+ teeth (118.5 showing now) when it broke free.
I'm now thinking the motor side is the side I need to adjust (push slide in) to match passive side. Does this sound right? More I think about it the more sense it makes to me.
Passive side is showing 115 teeth.

I am going to attempt this on Wednesday. There is actually an access door to the motor underneath. Not sure what motor is down there but hope it is easy to disengage the gear. Then I will need to push that side of the slide in about 3 teeth worth. This slide is about 10' and holds the recliners and a table with 4 chairs.
Here is where I need your wisdom. Has anybody done this? Will I be able to push the slide in myself?

Thanks all! Oh, this is a through the frame slide, 2 rails with teeth on the bottom. It is NOT a in the wall schwintek!