Denon DP-37F Tracking Issues

So I've been asking questions on some FB TT groups, but thought I'd cross post here. 

I was gifted a Denon DP-37F from a neighbor. It came with a ADCOM GFC-1E cartridge with a damaged stylus. First I mounted an AT95 on it to see how things were working and it exhibited this behavior: tracks fine/sounds good for first half of an album then starts to skip - regardless of album, location etc.. So I researched and ordered a new stylus for the ADCOM and when it came I reinstalled it on the DP-37F. Unfortunately, same behavior.

I should point out what a weirdo this tone arm is, meaning that tracking and damping are controlled by microprocessor and the "Dynamic Servo Tracer." So if you haven't owned or worked on one of a half dozen Denon models that has this, some things that work on mechanically adjusted arms, don't apply.

In another forum, I was reminded about the 3 adjustment screws under the platter, one of which adjusts the tracking. I opened her up and unscrewed the board and then deoxited the 3 mini pots with screw adjustments. Then I put the platter back on and adjusted V5 per the service manual to 1.8 with a tracking force gauge. I was hoping this was going to solve it, but unfortunately it still has the issue.

Watch the video and you'll see that it tracks great until about 1/2 way through the LP, then it starts to skip and repeat like it's a scratched record but it's not. Sounds great on the first tracks! (Don't know how to add videos on Audiogon, here's a link to Vinyl Turntable Owners on FB with video and pics - if that works!) https://www.facebook.com/share/p/1Es5HA4LvF/

Thanks much for anyone who might have experience with Denon microprocessor arm and might have suggestions.