| I feel you have nothing to lose by trying another type set be it comfort shorts or the inset 30's. Also, you may want to use some other sites such as thighs, love handles, hips, upper buttocks..etc. What I have found is the proper set and the proper site can make all the difference in the world. While I do feel you could benefit from some basal testing also, I would change the type of set and use new sites first.
As for the comfort shorts, I love them. Since I started using them things have been much much better for me overall.
It's a shame your endo and his staff aren't more helpful. Also, have you tried your pump trainer?? I found them to be very good at troubleshooting. | 
