Mount the cutting tool on the bottom angle of the holder. Set the compound to 29 or 29.5 degrees. Always return to the zero on the cross slide and advance the cuts on the compound. Until we know the TPI, engage the half nuts at the same number. Take light cuts, especially near the finish size.
You appear to be having too many problems lately, perhaps there is something going on with your health. Just throwing it out there and not trying to be a wise guy, I am simply concerned.
It has been quite quiet, my thought is that the boom time for the smaller tractors has cooled quite a bit. I don't know if folks are running low on money or if we have reached the saturation point.
The only trailer tire that I would buy is Goodyear Endurance. On those trailers that I can fit a truck tire, I use Goodyear Wrangler HT tires. Stay away from any and all China Bombs.
In my opinion the word "tuneup" has been obsolete for half a century. Maintenance of filters, fluid changes and valve adjustments are in the owners manual. Problems with performance should be spelled out to the mechanic so he can address that issue. As far as an alternator failing that can...