I think I have to go against the flow here. If he is fine at two hours and then goes up 90 points in one hour then he would have to be VERY short on basal for that to happen from basal alone.
I started a thread about how similar a basal shortage is to a bolus shortage of the same amount. The popular opinion there seemed to be that it all came down to absorption and if absorption were the same then the affect of the shortage would be about the same.
So basically he would have to be short enough basal in 1 hour to cause a 90 point climb. I don't know what his ISF is but let's say it's 90. He would have to be short a full unit of basal in that hour to cause a 90 point climb. I doubt if he's off that far.
I think it could be a bolus issue or a combination of basal and bolus, but not just basal.
Jacob has very slow digestion at lunch and dinner. Even without high fat his insulin can hit him before the food causing his BG to drop and then rise. If I prebolused by 1/2 hour at lunch or dinner I will guarantee you he would drop low because the insulin would hit him first. I think it's worse in the summer too, with the extra activity causing the insulin to absorb faster.
So here's a possible scenario: Let's say that Carson is experiencing slow digestion and his bolus is too low. Well, he might have enough bolus to keep him from dropping low but then when the food digests there's not enough bolus left to prevent the spike. If you gave him more of a bolus he might go low first before he comes back up.
How far ahead of the meal are you prebolusing? You might want to try giving the bolus right when he starts to eat or even giving an extended bolus. You could also try lowering his carb ratio, but not prebolusing and possibly raising his basal rate too.
Now, this is all just my opinion and I reserve the right to be completely wrong.
Dave (non D)
Father of Jacob (Type 1, dx'd 11/2005, born 12/11/2000)
Medtronic Revel 722 since 1/08/2012; Apidra
AccuCheck Aviva meter, Sure T infusion set
Guardian CGM since 1/9/2012
Former Animas and Dexcom user
Husband to Tammy, Father of Andrea, 13 and Logan, 16 (all non D)
"Consistency is the last refuge of the unimaginative." - Oscar Wilde
"Progress is made by lazy men looking for easier ways to do things." - Robert A. Heinlein