May be you can't lock to 82W new HD channels (assuming they're initially in clear for testing) because that signal is 8psk Turbo modulated? Keep also in mind, some tuner chipsets are far from their advertised specs in tuning to S2 signals. Some FTA equipment manufacturers dropped using some popular low cost chipset models because of that. Did you notice, FTA Receiver and Card makers almost NEVER disclose what tuner, demodulator and decoder chips they use - figure out why... This is one of critical points in receiver selection that will determine its every day performance, which is purposely omitted from most specs, unless they're really good. Its similar to hiding motherboard model and specs in major brand PCs, as the MDs used are often obsolete compare to DIY current models for 2 reasons - to cut costs and limit your upgrade options forcing to buy a new PC sooner. More, try to contact any FTA brand tech support to find out the tuner chipset model - they won't tell! Even latest and greatest AZBox support...In fact, such disclosure can kill any receiver sales, if the chipset used is known to not lock much...if anything, or be too sensitive to voltage variations, etc. So, people buy a receiver being unaware of that, and then keep posting in forums, it can't lock most S2 and 8psk signals.
I start thinking, for that reason FTA STB makers avoid showing signal type in channel info, despite locked signal types are obviously known to the receiver. The shortcomings would be too evident and easily help to return the receivers, if they do. Usually STB makers wait for several chipset revisions to pass by until start using it, but often it doesn't help. Still price is the make-or-break factor in choosing a chipset - its extra profit consumer never knows about.