Sorry that I can’t help, but I am curious at to what it is that you are trying to fix. I have used my TS55 for many years with no adjustments except to snug it into the rail.
While cutting 8/4 stock on my TS55 and 12/4 stock on the TS75 There were a couple times I needed to flip the stock to complete the cut. When I did this, I noticed that the saw engaged about 1/2 way down which means there is a small error when trying to cut square which I would like to adjust out.
I don't think I've ever achieved an absolutely 100% flawless, perfect flip-over cut, no matter how carefully I've squared up or measured. The tiniest error or discrepancy in positioning of the guide rail after flip-over will cause a lip where the two halves of the cut meet. I'm also guessing that the stock is roughsawn rather than planed square-edged? This can also cause inaccuracy as the material may not necessarily be square, or its faces parallel. I think the combination of some or all of the above is a much more likely reason for inaccuracy than than the saw being out of square. The best tool for cutting 8x4 or 12x4 is a 12" mitre saw.
The stock was jointed (on a jointer that I squared perfectly) on the edge I was using against the fence of the MFT, and the MFT was squared using a large woodpeckers MFT setup square, so I Know it was very good. Cut ended up quite good too, and I was able to quickly sand out any lip left over. It just made me notice that my track saw was likely not completely square.
I'm probably going to pop off the cover this weekend on both the TS55 and TS75 just to check how far off they are. It's probably not going to be that much.
You are right, I do have a nice Dewalt 12" miter saw I could have used, and those are easy to confirm square. I'm just excited about my new track saws, and want to think they are perfect.
I'll post how it goes after I check the saws.
