One question.......someone else also mentioned that jriver sees 6 tuners; 3 that start with "silicon" and 3 that start with "HD Homerun". I now realize the "HD Homerun" tuners that configure to either disable or open cable is the correct set and i must move them to the top in order for it to work correctly. But how do delete the other 3 that offer "digital" configuration?
If you install SiliconDust software/driver without having a CableCARD inserted in the device, I believe BDA drivers are installed, as the tuners can be used as either ATSC/QAM tuners or CableCARD tuners. Inside MC the BDA devices have names that ends with "(digital)" whereas CableCARD devices have names that end with "(OpenCable)".
You can not delete devices from within MC. You can disable them. On TV Options, select those devices one at a time, and click Configure... button. Set "Tuner Type" to "Disabled". In any case, even if you do not do anything, these devices will not interfere with your use of CableCARD tuners as MC treats them as in different categories and will only pick a CableCARD tuner for playing CableCARD channels.
Did you run HDHomeRun Setup program to make sure the tuners are set up correctly? Under Tuners tab, make sure you set "Source Type" to CableCARD. Under CableCARD tab you should be able to scan for channels using any one of the three tuners.