I’m sorry you’re struggling, Annette. I’m really not sure why the difference between the two pumps; maybe someone else with more experience will comment on that. The only thing I can think of is there is differences between the two in how things are set and perhaps you don’t have things set right for the Ping. (You might want to go back through your Setup and give some thought to the things you’ve programed in to make sure)
I do have a couple thoughts though. My understanding is that the 50/50 division of basal and bolus, and not carved in stone. Even in Pumping Insulin, John Walsh gives formulas for other breakdowns. What counts is what works for you. I have heard, though, more divisions that were slanted the other way, because the person ate low carb and my own (moderate low) basal was about 60% last time I looked. But if you are high a lot, than perhaps your basal is too low and the bolus is trying to compensate.
I’ve been on my Ping just short of 2 months. I’ve been doing a lot of tweaking of numbers and along the way have had both highs and lows, but it is evening out nicely, so I don’t think 6 weeks is that long to get numbers in line. For me, what I did was looked for patterns. First to differentiate between basal and bolus problems: Are the highs (mostly) two hours after meals or other times, like waking, in between meals and bedtime? My guess is the latter. If it were the bolus than you would want to tweak your I:C ratios. If it is the basal you want to look at the times of day that the highs are occuring (if they are not all the time) and work on tweaking your basal for each of those “time zones” a little bit at a time and seeing the results. My understanding is the basal should be tweaked about 3 hours before the time it affects. (So if you have a lot of highs from 3PM to 7 PM you would want to increase your basal from Noon to 4 PM.
Hope this helps.