The weak high notes are the same on pull or push. The 48 bass 30 key Scarlatti accordion although purchased as used is like new with very little playing by the original from new owner. He told me that it was about 7 years old. Maybe Scarlatti have improved their reeds or perhaps the reeds just need freeing.? My plan is to upgrade as my playing improves maybe to a 72 bass. CJ.