older HQ Sixteen with Pro Stitcher Premium

I'm helping a friend who has an older Sixteen on 12' bars running Pro Stitcher Premium.  We have stumbled upon some of the peculiarities of this combination (like the levers on the carriage to engage the wheels on the PS track) and I'm looking for videos or manuals explaining how this combination works.  Last week I had to call HQ Tech Support to get us past one spot that we didn't understand. There are so so so many videos and I don't want to have to wade through them all to find the nuggets of information I need.  

Anyone familiar with this set up and can direct me to some useful videos?  thanks!