The Ku TP's are likely a result of the stb's behavior, a different stb will likely behave differently so don't pay much mind to that. there's many answers to your questions and various approaches you could take, you should first decide on what satellite to park the dish on if you plan on keeping it fixed then add to it. You'll need access to the front of the dish though. I myself would first build the scaffold before anything else unless you've found a way to do it without. In this hobby you'll be probably making changes frequently, nothing is ever finished so to speak. On the other hand you may be better off using a actuator unless you are satisfied with just having a few sats to watch or at least until you've surveyed all the various feeds and then decided to stick with just a few. It's really up to you and your preferences, we see changes all the time, feeds come and go, networks move, etc. so you need to plan ahead. You'll probably end up buying another receiver too and this can open up a whole new world of feed hunting especially if it's a HD stb and it does S2 besides. At this time your hardware is limiting your potential.
As for another C-lnb, there may be plenty to choose from but not all C/Ku lnb's work alike on any dish, I have a DMSI BSC621 combo lnb that never suited my Ku needs so I removed the Ku lnb and placed a aluminum plate over it. The BSC621 has served me well for almost 4 years and still works. Other member's will have suggestions as well but in this hobby, many things are questionable and we find out the hard way sometimes. Hardware compatibilty is a big issue and you will just have to chance many things. What works for one guy may not work for you. Making mods and fitting multiple lnb's is all experimental and will take time and will test your patience but you'll gain a bevy of knowledge as well.
So IMO, I'd replace the LNB with it's matching scalar ring, one that doesn't require a servo and use the actuator to navigate the dish and test, try and see what you like and what to keep then plan from there. Did I leave anything out? I'm sure I have but the ball is in your court now that you've verified the dish is on the arc. Take it from here
As for another C-lnb, there may be plenty to choose from but not all C/Ku lnb's work alike on any dish, I have a DMSI BSC621 combo lnb that never suited my Ku needs so I removed the Ku lnb and placed a aluminum plate over it. The BSC621 has served me well for almost 4 years and still works. Other member's will have suggestions as well but in this hobby, many things are questionable and we find out the hard way sometimes. Hardware compatibilty is a big issue and you will just have to chance many things. What works for one guy may not work for you. Making mods and fitting multiple lnb's is all experimental and will take time and will test your patience but you'll gain a bevy of knowledge as well.
So IMO, I'd replace the LNB with it's matching scalar ring, one that doesn't require a servo and use the actuator to navigate the dish and test, try and see what you like and what to keep then plan from there. Did I leave anything out? I'm sure I have but the ball is in your court now that you've verified the dish is on the arc. Take it from here
Results will obviously vary from application to application. This wasn't a fluke IMO, I spent hours tweaking the DMX242 with no luck but after taking 15 minutes to install and tweak the Panorama I had a big improvement, name brands and higher prices don't mean much in this hobby anymore 
